202102157 has 2 divisors, whose sum is σ = 202102158. Its totient is φ = 202102156.

The previous prime is 202102141. The next prime is 202102207. The reversal of 202102157 is 751201202.

202102157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194295721 + 7806436 = 13939^2 + 2794^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102157 - 2⁴ = 202102141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202102057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101051078 + 101051079.

It is an arithmetic number, because the mean of its divisors is an integer number (101051079).

Almost surely, 2^202102157 is an apocalyptic number.

It is an amenable number.

202102157 is a deficient number, since it is larger than the sum of its proper divisors (1).

202102157 is an equidigital number, since it uses as much as digits as its factorization.

202102157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 202102157 is about 14216.2638200056. The cubic root of 202102157 is about 586.8453254870.

Adding to 202102157 its reverse (751201202), we get a palindrome (953303359).

The spelling of 202102157 in words is "two hundred two million, one hundred two thousand, one hundred fifty-seven".