15421012 has 12 divisors (see below), whose sum is σ = 27857536. Its totient is φ = 7461720.

The previous prime is 15421001. The next prime is 15421013. The reversal of 15421012 is 21012451.

It is a super-2 number, since 2×15421012² = 475615222208288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15421013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62058 + ... + 62305.

Almost surely, 2^15421012 is an apocalyptic number.

It is an amenable number.

15421012 is a deficient number, since it is larger than the sum of its proper divisors (12436524).

15421012 is a wasteful number, since it uses less digits than its factorization.

15421012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124398 (or 124396 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 15421012 is about 3926.9596381934. The cubic root of 15421012 is about 248.9072949410.

Adding to 15421012 its reverse (21012451), we get a palindrome (36433463).

The spelling of 15421012 in words is "fifteen million, four hundred twenty-one thousand, twelve".