202140137 has 2 divisors, whose sum is σ = 202140138. Its totient is φ = 202140136.

The previous prime is 202140101. The next prime is 202140151. The reversal of 202140137 is 731041202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 178917376 + 23222761 = 13376^2 + 4819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202140137 is a prime.

It is not a weakly prime, because it can be changed into another prime (202140157) 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, 101070068 + 101070069.

It is an arithmetic number, because the mean of its divisors is an integer number (101070069).

Almost surely, 2^202140137 is an apocalyptic number.

It is an amenable number.

202140137 is a deficient number, since it is larger than the sum of its proper divisors (1).

202140137 is an equidigital number, since it uses as much as digits as its factorization.

202140137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 202140137 is about 14217.5995512604. The cubic root of 202140137 is about 586.8820841074.

Adding to 202140137 its reverse (731041202), we get a palindrome (933181339).

The spelling of 202140137 in words is "two hundred two million, one hundred forty thousand, one hundred thirty-seven".