122438312 has 16 divisors (see below), whose sum is σ = 229875360. Its totient is φ = 61138224.

The previous prime is 122438311. The next prime is 122438317. The reversal of 122438312 is 213834221.

It is a super-2 number, since 2×122438312² = 29982280490818688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (122438311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3428 + ... + 16019.

It is an arithmetic number, because the mean of its divisors is an integer number (14367210).

Almost surely, 2^122438312 is an apocalyptic number.

It is an amenable number.

122438312 is a deficient number, since it is larger than the sum of its proper divisors (107437048).

122438312 is a wasteful number, since it uses less digits than its factorization.

122438312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20240 (or 20236 counting only the distinct ones).

The product of its digits is 2304, while the sum is 26.

The square root of 122438312 is about 11065.1846798867. The cubic root of 122438312 is about 496.5608142409.

The spelling of 122438312 in words is "one hundred twenty-two million, four hundred thirty-eight thousand, three hundred twelve".