122102780 has 24 divisors (see below), whose sum is σ = 256668720. Its totient is φ = 48792960.

The previous prime is 122102779. The next prime is 122102807. The reversal of 122102780 is 87201221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23456 + ... + 28184.

It is an arithmetic number, because the mean of its divisors is an integer number (10694530).

Almost surely, 2^122102780 is an apocalyptic number.

122102780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122102780 is an abundant number, since it is smaller than the sum of its proper divisors (134565940).

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

122102780 is a wasteful number, since it uses less digits than its factorization.

122102780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029 (or 6027 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 122102780 is about 11050.0126696760. The cubic root of 122102780 is about 496.1068047401.

The spelling of 122102780 in words is "one hundred twenty-two million, one hundred two thousand, seven hundred eighty".