42400440001999 has 4 divisors (see below), whose sum is σ = 42400598472936. Its totient is φ = 42400281531064.

The previous prime is 42400440001981. The next prime is 42400440002033. The reversal of 42400440001999 is 99910004400424.

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 42400440001999 - 2⁴⁵ = 7216067913167 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 (42400440001499) 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, 78833449 + ... + 79369474.

It is an arithmetic number, because the mean of its divisors is an integer number (10600149618234).

Almost surely, 2^{42400440001999} is an apocalyptic number.

42400440001999 is a deficient number, since it is larger than the sum of its proper divisors (158470937).

42400440001999 is a wasteful number, since it uses less digits than its factorization.

42400440001999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158470936.

The product of its (nonzero) digits is 373248, while the sum is 46.

The spelling of 42400440001999 in words is "forty-two trillion, four hundred billion, four hundred forty million, one thousand, nine hundred ninety-nine".