365940021 has 8 divisors (see below), whose sum is σ = 494604160. Its totient is φ = 240617952.

The previous prime is 365940017. The next prime is 365940049. The reversal of 365940021 is 120049563.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 365940021 - 2² = 365940017 is a prime.

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 (365940061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835261 + ... + 835698.

It is an arithmetic number, because the mean of its divisors is an integer number (61825520).

Almost surely, 2^365940021 is an apocalyptic number.

It is an amenable number.

365940021 is a deficient number, since it is larger than the sum of its proper divisors (128664139).

365940021 is a wasteful number, since it uses less digits than its factorization.

365940021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671035.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 365940021 is about 19129.5588292046. The cubic root of 365940021 is about 715.2699331262.

Adding to 365940021 its reverse (120049563), we get a palindrome (485989584).

The spelling of 365940021 in words is "three hundred sixty-five million, nine hundred forty thousand, twenty-one".