122530540 has 24 divisors (see below), whose sum is σ = 280706832. Its totient is φ = 44556480.

The previous prime is 122530459. The next prime is 122530559. The reversal of 122530540 is 45035221.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 278259 + ... + 278698.

It is an arithmetic number, because the mean of its divisors is an integer number (11696118).

Almost surely, 2^122530540 is an apocalyptic number.

122530540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122530540 is an abundant number, since it is smaller than the sum of its proper divisors (158176292).

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

122530540 is a wasteful number, since it uses less digits than its factorization.

122530540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556977 (or 556975 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 122530540 is about 11069.3513811786. The cubic root of 122530540 is about 496.6854629064.

Adding to 122530540 its reverse (45035221), we get a palindrome (167565761).

The spelling of 122530540 in words is "one hundred twenty-two million, five hundred thirty thousand, five hundred forty".