122639536 has 10 divisors (see below), whose sum is σ = 237614132. Its totient is φ = 61319760.

The previous prime is 122639533. The next prime is 122639537. The reversal of 122639536 is 635936221.

It is a junction number, because it is equal to n+sod(n) for n = 122639495 and 122639504.

It is not an unprimeable number, because it can be changed into a prime (122639533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3832470 + ... + 3832501.

Almost surely, 2^122639536 is an apocalyptic number.

122639536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122639536 is a deficient number, since it is larger than the sum of its proper divisors (114974596).

122639536 is an equidigital number, since it uses as much as digits as its factorization.

122639536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7664979 (or 7664973 counting only the distinct ones).

The product of its digits is 58320, while the sum is 37.

The square root of 122639536 is about 11074.2736104902. The cubic root of 122639536 is about 496.8326933693.

The spelling of 122639536 in words is "one hundred twenty-two million, six hundred thirty-nine thousand, five hundred thirty-six".