122555142 has 48 divisors (see below), whose sum is σ = 283057632. Its totient is φ = 38188800.

The previous prime is 122555141. The next prime is 122555171. The reversal of 122555142 is 241555221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122555141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 46767 + ... + 49317.

It is an arithmetic number, because the mean of its divisors is an integer number (5897034).

Almost surely, 2^122555142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122555142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141528816).

122555142 is an abundant number, since it is smaller than the sum of its proper divisors (160502490).

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

122555142 is a wasteful number, since it uses less digits than its factorization.

122555142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2733 (or 2730 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 122555142 is about 11070.4625919606. The cubic root of 122555142 is about 496.7187026142.

The spelling of 122555142 in words is "one hundred twenty-two million, five hundred fifty-five thousand, one hundred forty-two".