15230402421 has 16 divisors (see below), whose sum is σ = 21875449344. Its totient is φ = 9369918144.

The previous prime is 15230402351. The next prime is 15230402423. The reversal of 15230402421 is 12420403251.

It is not a de Polignac number, because 15230402421 - 2¹¹ = 15230400373 is a prime.

It is a super-2 number, since 2×15230402421² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15230402391 and 15230402400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15230402423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90300 + ... + 196506.

It is an arithmetic number, because the mean of its divisors is an integer number (1367215584).

Almost surely, 2^15230402421 is an apocalyptic number.

It is an amenable number.

15230402421 is a deficient number, since it is larger than the sum of its proper divisors (6645046923).

15230402421 is a wasteful number, since it uses less digits than its factorization.

15230402421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109900.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 15230402421 its reverse (12420403251), we get a palindrome (27650805672).

The spelling of 15230402421 in words is "fifteen billion, two hundred thirty million, four hundred two thousand, four hundred twenty-one".