202102156 has 6 divisors (see below), whose sum is σ = 353678780. Its totient is φ = 101051076.

The previous prime is 202102141. The next prime is 202102157. The reversal of 202102156 is 651201202.

It is not an unprimeable number, because it can be changed into a prime (202102157) 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, 25262766 + ... + 25262773.

Almost surely, 2^202102156 is an apocalyptic number.

It is an amenable number.

202102156 is a deficient number, since it is larger than the sum of its proper divisors (151576624).

202102156 is a wasteful number, since it uses less digits than its factorization.

202102156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50525543 (or 50525541 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 202102156 is about 14216.2637848346. The cubic root of 202102156 is about 586.8453245191.

Adding to 202102156 its reverse (651201202), we get a palindrome (853303358).

It can be divided in two parts, 20210 and 2156, that added together give a triangular number (22366 = T₂₁₁).

The spelling of 202102156 in words is "two hundred two million, one hundred two thousand, one hundred fifty-six".