102500042 has 8 divisors (see below), whose sum is σ = 154335456. Its totient is φ = 51054892.

The previous prime is 102500023. The next prime is 102500077. The reversal of 102500042 is 240005201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×102500042² = 21012517220003528, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 96908 + ... + 97959.

It is an arithmetic number, because the mean of its divisors is an integer number (19291932).

Almost surely, 2^102500042 is an apocalyptic number.

102500042 is a deficient number, since it is larger than the sum of its proper divisors (51835414).

102500042 is a wasteful number, since it uses less digits than its factorization.

102500042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195132.

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 102500042 is about 10124.2304398902. The cubic root of 102500042 is about 467.9951450783.

Adding to 102500042 its reverse (240005201), we get a palindrome (342505243).

It can be divided in two parts, 10 and 2500042, that added together give a palindrome (2500052).

The spelling of 102500042 in words is "one hundred two million, five hundred thousand, forty-two".