122420040 has 64 divisors (see below), whose sum is σ = 386596800. Its totient is φ = 30926592.

The previous prime is 122420033. The next prime is 122420041. The reversal of 122420040 is 40024221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (122420041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24567 + ... + 29126.

It is an arithmetic number, because the mean of its divisors is an integer number (6040575).

Almost surely, 2^122420040 is an apocalyptic number.

122420040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122420040 is an abundant number, since it is smaller than the sum of its proper divisors (264176760).

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

122420040 is a wasteful number, since it uses less digits than its factorization.

122420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53726 (or 53722 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 122420040 is about 11064.3589963450. The cubic root of 122420040 is about 496.5361117045.

Adding to 122420040 its reverse (40024221), we get a palindrome (162444261).

The spelling of 122420040 in words is "one hundred twenty-two million, four hundred twenty thousand, forty".