102323122042 has 4 divisors (see below), whose sum is σ = 153484683066. Its totient is φ = 51161561020.

The previous prime is 102323122021. The next prime is 102323122049. The reversal of 102323122042 is 240221323201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240221323201 = 47 ⋅5111091983.

It can be written as a sum of positive squares in only one way, i.e., 59746513761 + 42576608281 = 244431^2 + 206341^2 .

It is not an unprimeable number, because it can be changed into a prime (102323122049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25580780509 + ... + 25580780512.

Almost surely, 2^102323122042 is an apocalyptic number.

102323122042 is a deficient number, since it is larger than the sum of its proper divisors (51161561024).

102323122042 is an equidigital number, since it uses as much as digits as its factorization.

102323122042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51161561023.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 102323122042 its reverse (240221323201), we get a palindrome (342544445243).

The spelling of 102323122042 in words is "one hundred two billion, three hundred twenty-three million, one hundred twenty-two thousand, forty-two".