452342021 has 4 divisors (see below), whose sum is σ = 453004992. Its totient is φ = 451679052.

The previous prime is 452341999. The next prime is 452342027. The reversal of 452342021 is 120243254.

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.

It is a cyclic number.

It is not a de Polignac number, because 452342021 - 2¹⁴ = 452325637 is a prime.

It is a super-2 number, since 2×452342021² = 409226607924728882, 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 (452342027) 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, 330461 + ... + 331826.

It is an arithmetic number, because the mean of its divisors is an integer number (113251248).

Almost surely, 2^452342021 is an apocalyptic number.

It is an amenable number.

452342021 is a deficient number, since it is larger than the sum of its proper divisors (662971).

452342021 is an equidigital number, since it uses as much as digits as its factorization.

452342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662970.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 452342021 is about 21268.3337617219. Note that the first 3 decimals coincide. The cubic root of 452342021 is about 767.6365496026.

Adding to 452342021 its reverse (120243254), we get a palindrome (572585275).

The spelling of 452342021 in words is "four hundred fifty-two million, three hundred forty-two thousand, twenty-one".