18056142542 has 8 divisors (see below), whose sum is σ = 27200455776. Its totient is φ = 8989323952.

The previous prime is 18056142521. The next prime is 18056142547. The reversal of 18056142542 is 24524165081.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18056142496 and 18056142505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18056142547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19373078 + ... + 19374009.

It is an arithmetic number, because the mean of its divisors is an integer number (3400056972).

Almost surely, 2^18056142542 is an apocalyptic number.

18056142542 is a deficient number, since it is larger than the sum of its proper divisors (9144313234).

18056142542 is a wasteful number, since it uses less digits than its factorization.

18056142542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38747322.

The product of its (nonzero) digits is 76800, while the sum is 38.

The spelling of 18056142542 in words is "eighteen billion, fifty-six million, one hundred forty-two thousand, five hundred forty-two".