152042021 has 4 divisors (see below), whose sum is σ = 152067552. Its totient is φ = 152016492.

The previous prime is 152041979. The next prime is 152042081. The reversal of 152042021 is 120240251.

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 not a de Polignac number, because 152042021 - 2²⁶ = 84933157 is a prime.

It is a super-2 number, since 2×152042021² = 46233552299528882, which contains 22 as substring.

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 (152042081) 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, 1430 + ... + 17496.

It is an arithmetic number, because the mean of its divisors is an integer number (38016888).

Almost surely, 2^152042021 is an apocalyptic number.

It is an amenable number.

152042021 is a deficient number, since it is larger than the sum of its proper divisors (25531).

152042021 is an equidigital number, since it uses as much as digits as its factorization.

152042021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25530.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 152042021 is about 12330.5320647570. The cubic root of 152042021 is about 533.7295045577.

Adding to 152042021 its reverse (120240251), we get a palindrome (272282272).

The spelling of 152042021 in words is "one hundred fifty-two million, forty-two thousand, twenty-one".