42423421122999 has 36 divisors (see below), whose sum is σ = 71383431844920. Its totient is φ = 24207762993120.

The previous prime is 42423421122959. The next prime is 42423421123003. The reversal of 42423421122999 is 99922112432424.

42423421122999 is a `hidden beast` number, since 4 + 2 + 4 + 2 + 3 + 421 + 122 + 9 + 99 = 666.

It is not a de Polignac number, because 42423421122999 - 2¹⁵ = 42423421090231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42423421122959) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 67528117 + ... + 68153454.

Almost surely, 2^{42423421122999} is an apocalyptic number.

42423421122999 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

42423421122999 is a deficient number, since it is larger than the sum of its proper divisors (28960010721921).

42423421122999 is a wasteful number, since it uses less digits than its factorization.

42423421122999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135682300 (or 135682290 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 42423421122999 in words is "forty-two trillion, four hundred twenty-three billion, four hundred twenty-one million, one hundred twenty-two thousand, nine hundred ninety-nine".