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124201021 = 7103917077
BaseRepresentation
bin1110110011100…
…10100000111101
322122201001202211
413121302200331
5223243413041
620154020421
73035456050
oct731624075
9278631684
10124201021
116412107a
1235717711
131c968139
14126d0a97
hex767283d

124201021 has 8 divisors (see below), whose sum is σ = 142088960. Its totient is φ = 106349328.

The previous prime is 124201019. The next prime is 124201027. The reversal of 124201021 is 120102421.

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 124201021 - 21 = 124201019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 124200992 and 124201010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124201027) 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, 1266 + ... + 15811.

It is an arithmetic number, because the mean of its divisors is an integer number (17761120).

Almost surely, 2124201021 is an apocalyptic number.

It is an amenable number.

124201021 is a deficient number, since it is larger than the sum of its proper divisors (17887939).

124201021 is a wasteful number, since it uses less digits than its factorization.

124201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18123.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 124201021 is about 11144.5511798367. The cubic root of 124201021 is about 498.9324168213.

Adding to 124201021 its reverse (120102421), we get a palindrome (244303442).

The spelling of 124201021 in words is "one hundred twenty-four million, two hundred one thousand, twenty-one".