15421002 has 16 divisors (see below), whose sum is σ = 31594752. Its totient is φ = 5014880.

The previous prime is 15421001. The next prime is 15421013. The reversal of 15421002 is 20012451.

It is not an unprimeable number, because it can be changed into a prime (15421001) 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 7 ways as a sum of consecutive naturals, for example, 31098 + ... + 31589.

It is an arithmetic number, because the mean of its divisors is an integer number (1974672).

Almost surely, 2^15421002 is an apocalyptic number.

15421002 is an abundant number, since it is smaller than the sum of its proper divisors (16173750).

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

15421002 is a wasteful number, since it uses less digits than its factorization.

15421002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62733.

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 15421002 is about 3926.9583649435. The cubic root of 15421002 is about 248.9072411383.

Adding to 15421002 its reverse (20012451), we get a palindrome (35433453).

The spelling of 15421002 in words is "fifteen million, four hundred twenty-one thousand, two".