122545780 has 24 divisors (see below), whose sum is σ = 294110208. Its totient is φ = 42015648.

The previous prime is 122545733. The next prime is 122545781. The reversal of 122545780 is 87545221.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122545781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437524 + ... + 437803.

It is an arithmetic number, because the mean of its divisors is an integer number (12254592).

Almost surely, 2^122545780 is an apocalyptic number.

122545780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122545780 is an abundant number, since it is smaller than the sum of its proper divisors (171564428).

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

122545780 is a wasteful number, since it uses less digits than its factorization.

122545780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 875343 (or 875341 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 122545780 is about 11070.0397469928. The cubic root of 122545780 is about 496.7060541611.

The spelling of 122545780 in words is "one hundred twenty-two million, five hundred forty-five thousand, seven hundred eighty".