102142434 has 16 divisors (see below), whose sum is σ = 204384672. Its totient is φ = 34030848.

The previous prime is 102142429. The next prime is 102142441. The reversal of 102142434 is 434241201.

It is a self number, because there is not a number n which added to its sum of digits gives 102142434.

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, 19522 + ... + 24194.

It is an arithmetic number, because the mean of its divisors is an integer number (12774042).

Almost surely, 2^102142434 is an apocalyptic number.

102142434 is an abundant number, since it is smaller than the sum of its proper divisors (102242238).

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

102142434 is a wasteful number, since it uses less digits than its factorization.

102142434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8321.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 102142434 is about 10106.5540121250. The cubic root of 102142434 is about 467.4502548421.

Adding to 102142434 its reverse (434241201), we get a palindrome (536383635).

The spelling of 102142434 in words is "one hundred two million, one hundred forty-two thousand, four hundred thirty-four".