123426536042 has 4 divisors (see below), whose sum is σ = 185139804066. Its totient is φ = 61713268020.

The previous prime is 123426536039. The next prime is 123426536089. The reversal of 123426536042 is 240635624321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 123298597321 + 127938721 = 351139^2 + 11311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123426535987 and 123426536005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30856634009 + ... + 30856634012.

Almost surely, 2^123426536042 is an apocalyptic number.

123426536042 is a deficient number, since it is larger than the sum of its proper divisors (61713268024).

123426536042 is an equidigital number, since it uses as much as digits as its factorization.

123426536042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61713268023.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 123426536042 in words is "one hundred twenty-three billion, four hundred twenty-six million, five hundred thirty-six thousand, forty-two".