15000232421 has 8 divisors (see below), whose sum is σ = 16003842624. Its totient is φ = 14010093760.

The previous prime is 15000232411. The next prime is 15000232427. The reversal of 15000232421 is 12423200051.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 15000232421 - 2¹⁴ = 15000216037 is a prime.

It is a super-3 number, since 3×15000232421³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 15000232393 and 15000232402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15000232427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3365585 + ... + 3370038.

It is an arithmetic number, because the mean of its divisors is an integer number (2000480328).

Almost surely, 2^15000232421 is an apocalyptic number.

It is an amenable number.

15000232421 is a deficient number, since it is larger than the sum of its proper divisors (1003610203).

15000232421 is a wasteful number, since it uses less digits than its factorization.

15000232421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735771.

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 15000232421 its reverse (12423200051), we get a palindrome (27423432472).

The spelling of 15000232421 in words is "fifteen billion, two hundred thirty-two thousand, four hundred twenty-one".