376204021 has 4 divisors (see below), whose sum is σ = 376346412. Its totient is φ = 376061632.

The previous prime is 376204013. The next prime is 376204063. The reversal of 376204021 is 120402673.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120402673 = 47 ⋅2561759.

It can be written as a sum of positive squares in 2 ways, for example, as 212722225 + 163481796 = 14585^2 + 12786^2 .

It is a cyclic number.

It is not a de Polignac number, because 376204021 - 2³ = 376204013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (376204321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67156 + ... + 72541.

It is an arithmetic number, because the mean of its divisors is an integer number (94086603).

Almost surely, 2^376204021 is an apocalyptic number.

It is an amenable number.

376204021 is a deficient number, since it is larger than the sum of its proper divisors (142391).

376204021 is a wasteful number, since it uses less digits than its factorization.

376204021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142390.

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 376204021 is about 19395.9795060729. The cubic root of 376204021 is about 721.8957378674.

Adding to 376204021 its reverse (120402673), we get a palindrome (496606694).

The spelling of 376204021 in words is "three hundred seventy-six million, two hundred four thousand, twenty-one".