365138421 has 8 divisors (see below), whose sum is σ = 487028640. Its totient is φ = 243336912.

The previous prime is 365138407. The next prime is 365138443. The reversal of 365138421 is 124831563.

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

It is not a de Polignac number, because 365138421 - 2⁹ = 365137909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (365138021) 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, 11890 + ... + 29523.

It is an arithmetic number, because the mean of its divisors is an integer number (60878580).

Almost surely, 2^365138421 is an apocalyptic number.

It is an amenable number.

365138421 is a deficient number, since it is larger than the sum of its proper divisors (121890219).

365138421 is a wasteful number, since it uses less digits than its factorization.

365138421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44355.

The product of its digits is 17280, while the sum is 33.

The square root of 365138421 is about 19108.5954742885. The cubic root of 365138421 is about 714.7472795867.

Adding to 365138421 its reverse (124831563), we get a palindrome (489969984).

The spelling of 365138421 in words is "three hundred sixty-five million, one hundred thirty-eight thousand, four hundred twenty-one".