15234043421 has 8 divisors (see below), whose sum is σ = 16045846080. Its totient is φ = 14423241888.

The previous prime is 15234043381. The next prime is 15234043423. The reversal of 15234043421 is 12434043251.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15234043421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15234043423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 218936 + ... + 280001.

It is an arithmetic number, because the mean of its divisors is an integer number (2005730760).

Almost surely, 2^15234043421 is an apocalyptic number.

It is an amenable number.

15234043421 is a deficient number, since it is larger than the sum of its proper divisors (811802659).

15234043421 is a wasteful number, since it uses less digits than its factorization.

15234043421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500563.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 15234043421 its reverse (12434043251), we get a palindrome (27668086672).

The spelling of 15234043421 in words is "fifteen billion, two hundred thirty-four million, forty-three thousand, four hundred twenty-one".