102130442 has 16 divisors (see below), whose sum is σ = 160142400. Its totient is φ = 48757632.

The previous prime is 102130403. The next prime is 102130451. The reversal of 102130442 is 244031201.

It is a self number, because there is not a number n which added to its sum of digits gives 102130442.

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, 29309 + ... + 32607.

It is an arithmetic number, because the mean of its divisors is an integer number (10008900).

Almost surely, 2^102130442 is an apocalyptic number.

102130442 is a deficient number, since it is larger than the sum of its proper divisors (58011958).

102130442 is a wasteful number, since it uses less digits than its factorization.

102130442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3997.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 102130442 is about 10105.9607163297. The cubic root of 102130442 is about 467.4319605100.

Adding to 102130442 its reverse (244031201), we get a palindrome (346161643).

The spelling of 102130442 in words is "one hundred two million, one hundred thirty thousand, four hundred forty-two".