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122002031 = 157853911
BaseRepresentation
bin1110100010110…
…01101001101111
322111120100022202
413101121221233
5222213031111
620034532115
73011000024
oct721315157
9274510282
10122002031
1162959a28
1234a3703b
131c378268
14122bb54b
15aa9db3b
hex7459a6f

122002031 has 8 divisors (see below), whose sum is σ = 123057984. Its totient is φ = 120949920.

The previous prime is 122002009. The next prime is 122002039. The reversal of 122002031 is 130200221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 122002031 - 26 = 122001967 is a prime.

It is a super-2 number, since 2×1220020312 = 29768991136249922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122002039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133466 + ... + 134376.

It is an arithmetic number, because the mean of its divisors is an integer number (15382248).

Almost surely, 2122002031 is an apocalyptic number.

122002031 is a deficient number, since it is larger than the sum of its proper divisors (1055953).

122002031 is an equidigital number, since it uses as much as digits as its factorization.

122002031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921.

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

The square root of 122002031 is about 11045.4529558547. The cubic root of 122002031 is about 495.9703185824.

Adding to 122002031 its reverse (130200221), we get a palindrome (252202252).

The spelling of 122002031 in words is "one hundred twenty-two million, two thousand, thirty-one".

Divisors: 1 157 853 911 133921 143027 777083 122002031