365940121 has 2 divisors, whose sum is σ = 365940122. Its totient is φ = 365940120.

The previous prime is 365940109. The next prime is 365940139. The reversal of 365940121 is 121049563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318122896 + 47817225 = 17836^2 + 6915^2 .

It is a cyclic number.

It is not a de Polignac number, because 365940121 - 2¹⁷ = 365809049 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (365940161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182970060 + 182970061.

It is an arithmetic number, because the mean of its divisors is an integer number (182970061).

Almost surely, 2^365940121 is an apocalyptic number.

It is an amenable number.

365940121 is a deficient number, since it is larger than the sum of its proper divisors (1).

365940121 is an equidigital number, since it uses as much as digits as its factorization.

365940121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 365940121 is about 19129.5614429605. The cubic root of 365940121 is about 715.2699982798.

Adding to 365940121 its reverse (121049563), we get a palindrome (486989684).

The spelling of 365940121 in words is "three hundred sixty-five million, nine hundred forty thousand, one hundred twenty-one".