152179421 has 4 divisors (see below), whose sum is σ = 154012992. Its totient is φ = 150345852.

The previous prime is 152179399. The next prime is 152179439. The reversal of 152179421 is 124971251.

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 a de Polignac number, because none of the positive numbers 2^k-152179421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152179471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 916661 + ... + 916826.

It is an arithmetic number, because the mean of its divisors is an integer number (38503248).

Almost surely, 2^152179421 is an apocalyptic number.

It is an amenable number.

152179421 is a deficient number, since it is larger than the sum of its proper divisors (1833571).

152179421 is an equidigital number, since it uses as much as digits as its factorization.

152179421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1833570.

The product of its digits is 5040, while the sum is 32.

The square root of 152179421 is about 12336.1023423122. The cubic root of 152179421 is about 533.8902328306.

The spelling of 152179421 in words is "one hundred fifty-two million, one hundred seventy-nine thousand, four hundred twenty-one".