122159856 has 80 divisors (see below), whose sum is σ = 388419584. Its totient is φ = 32216832.

The previous prime is 122159839. The next prime is 122159899. The reversal of 122159856 is 658951221.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9616 + ... + 18351.

Almost surely, 2^122159856 is an apocalyptic number.

122159856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

122159856 is an abundant number, since it is smaller than the sum of its proper divisors (266259728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122159856 is a wasteful number, since it uses less digits than its factorization.

122159856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27998 (or 27992 counting only the distinct ones).

The product of its digits is 43200, while the sum is 39.

The square root of 122159856 is about 11052.5949894131. The cubic root of 122159856 is about 496.1840931281.

The spelling of 122159856 in words is "one hundred twenty-two million, one hundred fifty-nine thousand, eight hundred fifty-six".