122255540 has 24 divisors (see below), whose sum is σ = 280076832. Its totient is φ = 44456480.

The previous prime is 122255533. The next prime is 122255569. The reversal of 122255540 is 45552221.

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, 277634 + ... + 278073.

It is an arithmetic number, because the mean of its divisors is an integer number (11669868).

Almost surely, 2^122255540 is an apocalyptic number.

122255540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122255540 is an abundant number, since it is smaller than the sum of its proper divisors (157821292).

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

122255540 is a wasteful number, since it uses less digits than its factorization.

122255540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 555727 (or 555725 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 122255540 is about 11056.9227183697. The cubic root of 122255540 is about 496.3136078203.

The spelling of 122255540 in words is "one hundred twenty-two million, two hundred fifty-five thousand, five hundred forty".