42161646103231 has 4 divisors (see below), whose sum is σ = 42161813293600. Its totient is φ = 42161478912864.

The previous prime is 42161646103223. The next prime is 42161646103259. The reversal of 42161646103231 is 13230164616124.

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

It is a cyclic number.

It is not a de Polignac number, because 42161646103231 - 2³ = 42161646103223 is a prime.

It is a super-2 number, since 2×42161646103231² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42161646103201) 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, 83216346 + ... + 83721463.

It is an arithmetic number, because the mean of its divisors is an integer number (10540453323400).

Almost surely, 2^{42161646103231} is an apocalyptic number.

42161646103231 is a deficient number, since it is larger than the sum of its proper divisors (167190369).

42161646103231 is a wasteful number, since it uses less digits than its factorization.

42161646103231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167190368.

The product of its (nonzero) digits is 124416, while the sum is 40.

The spelling of 42161646103231 in words is "forty-two trillion, one hundred sixty-one billion, six hundred forty-six million, one hundred three thousand, two hundred thirty-one".