123853039042 has 16 divisors (see below), whose sum is σ = 186112711800. Its totient is φ = 61815536640.

The previous prime is 123853039031. The next prime is 123853039061. The reversal of 123853039042 is 240930358321.

It can be written as a sum of positive squares in 4 ways, for example, as 43882289361 + 79970749681 = 209481^2 + 282791^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123853038986 and 123853039004.

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, 4041634 + ... + 4072162.

Almost surely, 2^123853039042 is an apocalyptic number.

123853039042 is a deficient number, since it is larger than the sum of its proper divisors (62259672758).

123853039042 is a wasteful number, since it uses less digits than its factorization.

123853039042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34101.

The product of its (nonzero) digits is 155520, while the sum is 40.

The spelling of 123853039042 in words is "one hundred twenty-three billion, eight hundred fifty-three million, thirty-nine thousand, forty-two".