102140235 has 24 divisors (see below), whose sum is σ = 177802560. Its totient is φ = 54241152.

The previous prime is 102140231. The next prime is 102140249. The reversal of 102140235 is 532041201.

It is not a de Polignac number, because 102140235 - 2² = 102140231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102140231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6007 + ... + 15503.

It is an arithmetic number, because the mean of its divisors is an integer number (7408440).

Almost surely, 2^102140235 is an apocalyptic number.

102140235 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

102140235 is a deficient number, since it is larger than the sum of its proper divisors (75662325).

102140235 is a wasteful number, since it uses less digits than its factorization.

102140235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747 (or 9744 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 102140235 is about 10106.4452207490. The cubic root of 102140235 is about 467.4469002765.

Adding to 102140235 its reverse (532041201), we get a palindrome (634181436).

The spelling of 102140235 in words is "one hundred two million, one hundred forty thousand, two hundred thirty-five".