202162139 has 2 divisors, whose sum is σ = 202162140. Its totient is φ = 202162138.

The previous prime is 202162123. The next prime is 202162151. The reversal of 202162139 is 931261202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202162139 - 2⁴ = 202162123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (202162159) 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 as a sum of consecutive naturals, namely, 101081069 + 101081070.

It is an arithmetic number, because the mean of its divisors is an integer number (101081070).

Almost surely, 2^202162139 is an apocalyptic number.

202162139 is a deficient number, since it is larger than the sum of its proper divisors (1).

202162139 is an equidigital number, since it uses as much as digits as its factorization.

202162139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 202162139 is about 14218.3732895152. The cubic root of 202162139 is about 586.9033764500.

The spelling of 202162139 in words is "two hundred two million, one hundred sixty-two thousand, one hundred thirty-nine".