1215412404 has 24 divisors (see below), whose sum is σ = 2839310880. Its totient is φ = 404659104.

The previous prime is 1215412397. The next prime is 1215412421. The reversal of 1215412404 is 4042145121.

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, 49134 + ... + 69605.

It is an arithmetic number, because the mean of its divisors is an integer number (118304620).

Almost surely, 2^1215412404 is an apocalyptic number.

It is an amenable number.

1215412404 is an abundant number, since it is smaller than the sum of its proper divisors (1623898476).

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

1215412404 is a wasteful number, since it uses less digits than its factorization.

1215412404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119599 (or 119597 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1215412404 is about 34862.7652947955. The cubic root of 1215412404 is about 1067.1887083093.

Adding to 1215412404 its reverse (4042145121), we get a palindrome (5257557525).

The spelling of 1215412404 in words is "one billion, two hundred fifteen million, four hundred twelve thousand, four hundred four".