42123167699 has 4 divisors (see below), whose sum is σ = 42124943736. Its totient is φ = 42121391664.

The previous prime is 42123167689. The next prime is 42123167701. The reversal of 42123167699 is 99676132124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42123167699 is a prime.

It is a super-2 number, since 2×42123167699² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42123167689) 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, 851954 + ... + 900039.

It is an arithmetic number, because the mean of its divisors is an integer number (10531235934).

Almost surely, 2^42123167699 is an apocalyptic number.

42123167699 is a deficient number, since it is larger than the sum of its proper divisors (1776037).

42123167699 is a wasteful number, since it uses less digits than its factorization.

42123167699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776036.

The product of its digits is 979776, while the sum is 50.

The spelling of 42123167699 in words is "forty-two billion, one hundred twenty-three million, one hundred sixty-seven thousand, six hundred ninety-nine".