102042140 has 12 divisors (see below), whose sum is σ = 214288536. Its totient is φ = 40816848.

The previous prime is 102042137. The next prime is 102042151. The reversal of 102042140 is 41240201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2551034 + ... + 2551073.

It is an arithmetic number, because the mean of its divisors is an integer number (17857378).

Almost surely, 2^102042140 is an apocalyptic number.

102042140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102042140 is an abundant number, since it is smaller than the sum of its proper divisors (112246396).

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

102042140 is a wasteful number, since it uses less digits than its factorization.

102042140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102116 (or 5102114 counting only the distinct ones).

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

The square root of 102042140 is about 10101.5909638037. The cubic root of 102042140 is about 467.2972077455.

Adding to 102042140 its reverse (41240201), we get a palindrome (143282341).

The spelling of 102042140 in words is "one hundred two million, forty-two thousand, one hundred forty".