400242042239999 has 8 divisors (see below), whose sum is σ = 400273727501952. Its totient is φ = 400210358238360.

The previous prime is 400242042239981. The next prime is 400242042240011. The reversal of 400242042239999 is 999932240242004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400242042239999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400242042239929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 694105094 + ... + 694681484.

It is an arithmetic number, because the mean of its divisors is an integer number (50034215937744).

Almost surely, 2^{400242042239999} is an apocalyptic number.

400242042239999 is a deficient number, since it is larger than the sum of its proper divisors (31685261953).

400242042239999 is a wasteful number, since it uses less digits than its factorization.

400242042239999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630157.

The product of its (nonzero) digits is 20155392, while the sum is 59.

The spelling of 400242042239999 in words is "four hundred trillion, two hundred forty-two billion, forty-two million, two hundred thirty-nine thousand, nine hundred ninety-nine".