122515040 has 96 divisors (see below), whose sum is σ = 307722240. Its totient is φ = 45964800.

The previous prime is 122515037. The next prime is 122515051. The reversal of 122515040 is 40515221.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580535 + ... + 580745.

It is an arithmetic number, because the mean of its divisors is an integer number (3205440).

Almost surely, 2^122515040 is an apocalyptic number.

122515040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122515040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153861120).

122515040 is an abundant number, since it is smaller than the sum of its proper divisors (185207200).

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

122515040 is a wasteful number, since it uses less digits than its factorization.

122515040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 122515040 is about 11068.6512276790. The cubic root of 122515040 is about 496.6645186060.

The spelling of 122515040 in words is "one hundred twenty-two million, five hundred fifteen thousand, forty".