152402421 has 16 divisors (see below), whose sum is σ = 206840768. Its totient is φ = 99792000.

The previous prime is 152402407. The next prime is 152402473. The reversal of 152402421 is 124204251.

It is not a de Polignac number, because 152402421 - 2²³ = 144013813 is a prime.

It is a super-2 number, since 2×152402421² = 46452995853322482, which contains 22 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 (152403421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83721 + ... + 85521.

It is an arithmetic number, because the mean of its divisors is an integer number (12927548).

Almost surely, 2^152402421 is an apocalyptic number.

It is an amenable number.

152402421 is a deficient number, since it is larger than the sum of its proper divisors (54438347).

152402421 is a wasteful number, since it uses less digits than its factorization.

152402421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2292.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 152402421 is about 12345.1375447988. The cubic root of 152402421 is about 534.1508887804.

Adding to 152402421 its reverse (124204251), we get a palindrome (276606672).

The spelling of 152402421 in words is "one hundred fifty-two million, four hundred two thousand, four hundred twenty-one".