15154042421 has 8 divisors (see below), whose sum is σ = 17387907264. Its totient is φ = 12937428000.

The previous prime is 15154042357. The next prime is 15154042427. The reversal of 15154042421 is 12424045151.

It is a happy number.

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

It is not a de Polignac number, because 15154042421 - 2⁶ = 15154042357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15154042427) 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, 4310720 + ... + 4314233.

It is an arithmetic number, because the mean of its divisors is an integer number (2173488408).

Almost surely, 2^15154042421 is an apocalyptic number.

It is an amenable number.

15154042421 is a deficient number, since it is larger than the sum of its proper divisors (2233864843).

15154042421 is an equidigital number, since it uses as much as digits as its factorization.

15154042421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8625211.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 15154042421 its reverse (12424045151), we get a palindrome (27578087572).

The spelling of 15154042421 in words is "fifteen billion, one hundred fifty-four million, forty-two thousand, four hundred twenty-one".