365138121 has 16 divisors (see below), whose sum is σ = 518120064. Its totient is φ = 227937024.

The previous prime is 365138113. The next prime is 365138149. The reversal of 365138121 is 121831563.

It is not a de Polignac number, because 365138121 - 2³ = 365138113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (365138171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8125 + ... + 28218.

It is an arithmetic number, because the mean of its divisors is an integer number (32382504).

Almost surely, 2^365138121 is an apocalyptic number.

It is an amenable number.

365138121 is a deficient number, since it is larger than the sum of its proper divisors (152981943).

365138121 is a wasteful number, since it uses less digits than its factorization.

365138121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36560.

The product of its digits is 4320, while the sum is 30.

The square root of 365138121 is about 19108.5876244164. The cubic root of 365138121 is about 714.7470838397.

Adding to 365138121 its reverse (121831563), we get a palindrome (486969684).

The spelling of 365138121 in words is "three hundred sixty-five million, one hundred thirty-eight thousand, one hundred twenty-one".