42731208154 has 8 divisors (see below), whose sum is σ = 64219840308. Its totient is φ = 21324594720.

The previous prime is 42731208133. The next prime is 42731208187. The reversal of 42731208154 is 45180213724.

It can be written as a sum of positive squares in 2 ways, for example, as 33425711929 + 9305496225 = 182827^2 + 96465^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20503377 + ... + 20505460.

Almost surely, 2^42731208154 is an apocalyptic number.

42731208154 is a deficient number, since it is larger than the sum of its proper divisors (21488632154).

42731208154 is a wasteful number, since it uses less digits than its factorization.

42731208154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41009360.

The product of its (nonzero) digits is 53760, while the sum is 37.

The spelling of 42731208154 in words is "forty-two billion, seven hundred thirty-one million, two hundred eight thousand, one hundred fifty-four".