102402140 has 24 divisors (see below), whose sum is σ = 215255040. Its totient is φ = 40920768.

The previous prime is 102402127. The next prime is 102402193. The reversal of 102402140 is 41204201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26789 + ... + 30371.

It is an arithmetic number, because the mean of its divisors is an integer number (8968960).

Almost surely, 2^102402140 is an apocalyptic number.

102402140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102402140 is an abundant number, since it is smaller than the sum of its proper divisors (112852900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102402140 is a wasteful number, since it uses less digits than its factorization.

102402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5021 (or 5019 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 102402140 is about 10119.3942506456. The cubic root of 102402140 is about 467.8460971528.

Adding to 102402140 its reverse (41204201), we get a palindrome (143606341).

The spelling of 102402140 in words is "one hundred two million, four hundred two thousand, one hundred forty".