4000400042 has 8 divisors (see below), whose sum is σ = 6001970016. Its totient is φ = 1999743372.

The previous prime is 4000400029. The next prime is 4000400059. The reversal of 4000400042 is 2400040004.

4000400042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 217268 + ... + 234959.

It is an arithmetic number, because the mean of its divisors is an integer number (750246252).

Almost surely, 2^4000400042 is an apocalyptic number.

4000400042 is a deficient number, since it is larger than the sum of its proper divisors (2001569974).

4000400042 is a wasteful number, since it uses less digits than its factorization.

4000400042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456652.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 4000400042 is about 63248.7157339973. The cubic root of 4000400042 is about 1587.4539691285.

Adding to 4000400042 its reverse (2400040004), we get a palindrome (6400440046).

It can be divided in two parts, 400040004 and 2, that multiplied together give a palindrome (800080008).

The spelling of 4000400042 in words is "four billion, four hundred thousand, forty-two".