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122031020 = 2256101551
BaseRepresentation
bin1110100011000…
…00101110101100
322111121211002102
413101200232230
5222214443040
620035314232
73011150366
oct721405654
9274554072
10122031020
1162979791
1234a4b978
131c388507
14122c7d36
15aaa7515
hex7460bac

122031020 has 12 divisors (see below), whose sum is σ = 256265184. Its totient is φ = 48812400.

The previous prime is 122031017. The next prime is 122031023. The reversal of 122031020 is 20130221.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (122031017) and next prime (122031023).

It is a junction number, because it is equal to n+sod(n) for n = 122030992 and 122031010.

It is not an unprimeable number, because it can be changed into a prime (122031023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3050756 + ... + 3050795.

It is an arithmetic number, because the mean of its divisors is an integer number (21355432).

Almost surely, 2122031020 is an apocalyptic number.

122031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122031020 is an abundant number, since it is smaller than the sum of its proper divisors (134234164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122031020 is a wasteful number, since it uses less digits than its factorization.

122031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101560 (or 6101558 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 122031020 is about 11046.7651373603. The cubic root of 122031020 is about 496.0095981060.

Adding to 122031020 its reverse (20130221), we get a palindrome (142161241).

The spelling of 122031020 in words is "one hundred twenty-two million, thirty-one thousand, twenty".

Divisors: 1 2 4 5 10 20 6101551 12203102 24406204 30507755 61015510 122031020