542343125161 has 4 divisors (see below), whose sum is σ = 543820899712. Its totient is φ = 540865350612.

The previous prime is 542343125147. The next prime is 542343125173. The reversal of 542343125161 is 161521343245.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 542343125161 - 2¹⁵ = 542343092393 is a prime.

It is a super-2 number, since 2×542343125161² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 542343125161.

It is not an unprimeable number, because it can be changed into a prime (542343120161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 738886725 + ... + 738887458.

It is an arithmetic number, because the mean of its divisors is an integer number (135955224928).

Almost surely, 2^542343125161 is an apocalyptic number.

It is an amenable number.

542343125161 is a deficient number, since it is larger than the sum of its proper divisors (1477774551).

542343125161 is a wasteful number, since it uses less digits than its factorization.

542343125161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477774550.

The product of its digits is 86400, while the sum is 37.

The spelling of 542343125161 in words is "five hundred forty-two billion, three hundred forty-three million, one hundred twenty-five thousand, one hundred sixty-one".