11423320042 has 16 divisors (see below), whose sum is σ = 17733876552. Its totient is φ = 5514900480.

The previous prime is 11423320039. The next prime is 11423320057. The reversal of 11423320042 is 24002332411.

It can be written as a sum of positive squares in 4 ways, for example, as 10035832041 + 1387488001 = 100179^2 + 37249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11423319995 and 11423320022.

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, 710133 + ... + 726040.

Almost surely, 2^11423320042 is an apocalyptic number.

11423320042 is a deficient number, since it is larger than the sum of its proper divisors (6310556510).

11423320042 is a wasteful number, since it uses less digits than its factorization.

11423320042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436313.

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

Adding to 11423320042 its reverse (24002332411), we get a palindrome (35425652453).

The spelling of 11423320042 in words is "eleven billion, four hundred twenty-three million, three hundred twenty thousand, forty-two".