122572431 has 12 divisors (see below), whose sum is σ = 187463952. Its totient is φ = 76908096.

The previous prime is 122572421. The next prime is 122572433. The reversal of 122572431 is 134275221.

122572431 is a `hidden beast` number, since 1 + 225 + 7 + 2 + 431 = 666.

It is not a de Polignac number, because 122572431 - 2⁶ = 122572367 is a prime.

It is a super-2 number, since 2×122572431² = 30048001682499522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122572395 and 122572404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122572433) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400411 + ... + 400716.

It is an arithmetic number, because the mean of its divisors is an integer number (15621996).

Almost surely, 2^122572431 is an apocalyptic number.

122572431 is a deficient number, since it is larger than the sum of its proper divisors (64891521).

122572431 is a wasteful number, since it uses less digits than its factorization.

122572431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801150 (or 801147 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 122572431 is about 11071.2434261017. The cubic root of 122572431 is about 496.7420590824.

The spelling of 122572431 in words is "one hundred twenty-two million, five hundred seventy-two thousand, four hundred thirty-one".