152132421 has 16 divisors (see below), whose sum is σ = 232562304. Its totient is φ = 86654784.

The previous prime is 152132389. The next prime is 152132447. The reversal of 152132421 is 124231251.

It is not a de Polignac number, because 152132421 - 2⁵ = 152132389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (152132021) 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, 4770 + ... + 18083.

It is an arithmetic number, because the mean of its divisors is an integer number (14535144).

Almost surely, 2^152132421 is an apocalyptic number.

It is an amenable number.

152132421 is a deficient number, since it is larger than the sum of its proper divisors (80429883).

152132421 is a wasteful number, since it uses less digits than its factorization.

152132421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23180.

The product of its digits is 480, while the sum is 21.

The square root of 152132421 is about 12334.1972174925. The cubic root of 152132421 is about 533.8352638900.

Adding to 152132421 its reverse (124231251), we get a palindrome (276363672).

The spelling of 152132421 in words is "one hundred fifty-two million, one hundred thirty-two thousand, four hundred twenty-one".