152604421 has 4 divisors (see below), whose sum is σ = 152755200. Its totient is φ = 152453644.

The previous prime is 152604407. The next prime is 152604443. The reversal of 152604421 is 124406251.

It is a happy number.

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, and also an emirpimes, since its reverse is a distinct semiprime: 124406251 = 139 ⋅895009.

It is a cyclic number.

It is not a de Polignac number, because 152604421 - 2²⁵ = 119049989 is a prime.

It is a super-3 number, since 3×152604421³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152604401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73861 + ... + 75898.

It is an arithmetic number, because the mean of its divisors is an integer number (38188800).

Almost surely, 2^152604421 is an apocalyptic number.

It is an amenable number.

152604421 is a deficient number, since it is larger than the sum of its proper divisors (150779).

152604421 is a wasteful number, since it uses less digits than its factorization.

152604421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150778.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 152604421 is about 12353.3161944475. The cubic root of 152604421 is about 534.3867792668.

The spelling of 152604421 in words is "one hundred fifty-two million, six hundred four thousand, four hundred twenty-one".