102130440 has 32 divisors (see below), whose sum is σ = 306391680. Its totient is φ = 27234752.

The previous prime is 102130403. The next prime is 102130451. The reversal of 102130440 is 44031201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425424 + ... + 425663.

It is an arithmetic number, because the mean of its divisors is an integer number (9574740).

Almost surely, 2^102130440 is an apocalyptic number.

102130440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102130440 is an abundant number, since it is smaller than the sum of its proper divisors (204261240).

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

102130440 is a wasteful number, since it uses less digits than its factorization.

102130440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851101 (or 851097 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 102130440 is about 10105.9606173782. The cubic root of 102130440 is about 467.4319574588.

Adding to 102130440 its reverse (44031201), we get a palindrome (146161641).

The spelling of 102130440 in words is "one hundred two million, one hundred thirty thousand, four hundred forty".