1215402421404 has 48 divisors (see below), whose sum is σ = 2919221043200. Its totient is φ = 393286591296.

The previous prime is 1215402421307. The next prime is 1215402421423. The reversal of 1215402421404 is 4041242045121.

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, 2922844 + ... + 3312675.

Almost surely, 2^{1215402421404} is an apocalyptic number.

It is an amenable number.

1215402421404 is an abundant number, since it is smaller than the sum of its proper divisors (1703818621796).

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

1215402421404 is a wasteful number, since it uses less digits than its factorization.

1215402421404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6236002 (or 6236000 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

Adding to 1215402421404 its reverse (4041242045121), we get a palindrome (5256644466525).

The spelling of 1215402421404 in words is "one trillion, two hundred fifteen billion, four hundred two million, four hundred twenty-one thousand, four hundred four".