122404520 has 32 divisors (see below), whose sum is σ = 314755200. Its totient is φ = 41967168.

The previous prime is 122404501. The next prime is 122404549. The reversal of 122404520 is 25404221.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 122404492 and 122404501.

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, 218300 + ... + 218859.

It is an arithmetic number, because the mean of its divisors is an integer number (9836100).

Almost surely, 2^122404520 is an apocalyptic number.

122404520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122404520 is an abundant number, since it is smaller than the sum of its proper divisors (192350680).

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

122404520 is a wasteful number, since it uses less digits than its factorization.

122404520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 437177 (or 437173 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 122404520 is about 11063.6576230467. The cubic root of 122404520 is about 496.5151277595.

Adding to 122404520 its reverse (25404221), we get a palindrome (147808741).

The spelling of 122404520 in words is "one hundred twenty-two million, four hundred four thousand, five hundred twenty".