11940431542 has 64 divisors (see below), whose sum is σ = 21143808000. Its totient is φ = 5006002176.

The previous prime is 11940431539. The next prime is 11940431549. The reversal of 11940431542 is 24513404911.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 11940431498 and 11940431507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11940431549) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2074084 + ... + 2079832.

It is an arithmetic number, because the mean of its divisors is an integer number (330372000).

Almost surely, 2^11940431542 is an apocalyptic number.

11940431542 is a deficient number, since it is larger than the sum of its proper divisors (9203376458).

11940431542 is a wasteful number, since it uses less digits than its factorization.

11940431542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5945.

The product of its (nonzero) digits is 17280, while the sum is 34.

The spelling of 11940431542 in words is "eleven billion, nine hundred forty million, four hundred thirty-one thousand, five hundred forty-two".