42156054423 has 32 divisors (see below), whose sum is σ = 72585100800. Its totient is φ = 23680876608.

The previous prime is 42156054407. The next prime is 42156054431. The reversal of 42156054423 is 32445065124.

42156054423 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 605 + 4 + 42 + 3 = 666.

It is not a de Polignac number, because 42156054423 - 2⁴ = 42156054407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156034423) 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 31 ways as a sum of consecutive naturals, for example, 1879086 + ... + 1901387.

It is an arithmetic number, because the mean of its divisors is an integer number (2268284400).

Almost surely, 2^42156054423 is an apocalyptic number.

42156054423 is a deficient number, since it is larger than the sum of its proper divisors (30429046377).

42156054423 is a wasteful number, since it uses less digits than its factorization.

42156054423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3780548 (or 3780542 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

The spelling of 42156054423 in words is "forty-two billion, one hundred fifty-six million, fifty-four thousand, four hundred twenty-three".