122740028856 has 48 divisors (see below), whose sum is σ = 334460335560. Its totient is φ = 40662336960.

The previous prime is 122740028837. The next prime is 122740028869. The reversal of 122740028856 is 658820047221.

It is a super-2 number, since 2×122740028856² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5217475 + ... + 5240946.

Almost surely, 2^122740028856 is an apocalyptic number.

It is an amenable number.

122740028856 is an abundant number, since it is smaller than the sum of its proper divisors (211720306704).

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

122740028856 is a wasteful number, since it uses less digits than its factorization.

122740028856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10458596 (or 10458589 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 122740028856 in words is "one hundred twenty-two billion, seven hundred forty million, twenty-eight thousand, eight hundred fifty-six".