102140156 has 12 divisors (see below), whose sum is σ = 180481392. Its totient is φ = 50574048.

The previous prime is 102140153. The next prime is 102140173. The reversal of 102140156 is 651041201.

It is a super-2 number, since 2×102140156² = 20865222935408672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102140153) 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 in 3 ways as a sum of consecutive naturals, for example, 123545 + ... + 124368.

It is an arithmetic number, because the mean of its divisors is an integer number (15040116).

Almost surely, 2^102140156 is an apocalyptic number.

It is an amenable number.

102140156 is a deficient number, since it is larger than the sum of its proper divisors (78341236).

102140156 is a wasteful number, since it uses less digits than its factorization.

102140156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248020 (or 248018 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 102140156 is about 10106.4413123512. The cubic root of 102140156 is about 467.4467797615.

Adding to 102140156 its reverse (651041201), we get a palindrome (753181357).

The spelling of 102140156 in words is "one hundred two million, one hundred forty thousand, one hundred fifty-six".