138762131 has 2 divisors, whose sum is σ = 138762132. Its totient is φ = 138762130.

The previous prime is 138762119. The next prime is 138762179. The reversal of 138762131 is 131267831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138762131 - 2⁶ = 138762067 is a prime.

It is a super-2 number, since 2×138762131² = 38509857999322322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (138762101) 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 as a sum of consecutive naturals, namely, 69381065 + 69381066.

It is an arithmetic number, because the mean of its divisors is an integer number (69381066).

Almost surely, 2^138762131 is an apocalyptic number.

138762131 is a deficient number, since it is larger than the sum of its proper divisors (1).

138762131 is an equidigital number, since it uses as much as digits as its factorization.

138762131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 138762131 is about 11779.7339104073. The cubic root of 138762131 is about 517.7144898796.

The spelling of 138762131 in words is "one hundred thirty-eight million, seven hundred sixty-two thousand, one hundred thirty-one".