11423320542 has 16 divisors (see below), whose sum is σ = 25385156880. Its totient is φ = 3807773496.

The previous prime is 11423320537. The next prime is 11423320547. The reversal of 11423320542 is 24502332411.

11423320542 is a `hidden beast` number, since 114 + 2 + 3 + 3 + 2 + 0 + 542 = 666.

It is an interprime number because it is at equal distance from previous prime (11423320537) and next prime (11423320547).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11423320547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105771433 + ... + 105771540.

It is an arithmetic number, because the mean of its divisors is an integer number (1586572305).

Almost surely, 2^11423320542 is an apocalyptic number.

11423320542 is an abundant number, since it is smaller than the sum of its proper divisors (13961836338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11423320542 is a wasteful number, since it uses less digits than its factorization.

11423320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211542984 (or 211542978 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 11423320542 its reverse (24502332411), we get a palindrome (35925652953).

The spelling of 11423320542 in words is "eleven billion, four hundred twenty-three million, three hundred twenty thousand, five hundred forty-two".