10102140 has 36 divisors (see below), whose sum is σ = 30643704. Its totient is φ = 2693856.

The previous prime is 10102139. The next prime is 10102151. The reversal of 10102140 is 4120101.

It is a happy number.

10102140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27882 + ... + 28241.

It is an arithmetic number, because the mean of its divisors is an integer number (851214).

Almost surely, 2^10102140 is an apocalyptic number.

10102140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10102140 is an abundant number, since it is smaller than the sum of its proper divisors (20541564).

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

10102140 is a wasteful number, since it uses less digits than its factorization.

10102140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56138 (or 56133 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 10102140 is about 3178.3863830567. The cubic root of 10102140 is about 216.1744989081.

Adding to 10102140 its reverse (4120101), we get a palindrome (14222241).

The spelling of 10102140 in words is "ten million, one hundred two thousand, one hundred forty".