15342013021 has 4 divisors (see below), whose sum is σ = 15602047200. Its totient is φ = 15081978844.

The previous prime is 15342013009. The next prime is 15342013031. The reversal of 15342013021 is 12031024351.

It is a happy number.

15342013021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15342013021 - 2⁷ = 15342012893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 15342012983 and 15342013001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15342013031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130017001 + ... + 130017118.

It is an arithmetic number, because the mean of its divisors is an integer number (3900511800).

Almost surely, 2^15342013021 is an apocalyptic number.

It is an amenable number.

15342013021 is a deficient number, since it is larger than the sum of its proper divisors (260034179).

15342013021 is an equidigital number, since it uses as much as digits as its factorization.

15342013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260034178.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 15342013021 its reverse (12031024351), we get a palindrome (27373037372).

The spelling of 15342013021 in words is "fifteen billion, three hundred forty-two million, thirteen thousand, twenty-one".