102310042 has 4 divisors (see below), whose sum is σ = 153465066. Its totient is φ = 51155020.

The previous prime is 102310037. The next prime is 102310051. The reversal of 102310042 is 240013201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240013201 = 457 ⋅525193.

It can be written as a sum of positive squares in only one way, i.e., 102030201 + 279841 = 10101^2 + 529^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25577509 + ... + 25577512.

Almost surely, 2^102310042 is an apocalyptic number.

102310042 is a deficient number, since it is larger than the sum of its proper divisors (51155024).

102310042 is an equidigital number, since it uses as much as digits as its factorization.

102310042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51155023.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 102310042 is about 10114.8426581930. The cubic root of 102310042 is about 467.7057986081.

Adding to 102310042 its reverse (240013201), we get a palindrome (342323243).

The spelling of 102310042 in words is "one hundred two million, three hundred ten thousand, forty-two".