4000420042 has 16 divisors (see below), whose sum is σ = 6370392960. Its totient is φ = 1877577408.

The previous prime is 4000420031. The next prime is 4000420133. The reversal of 4000420042 is 2400240004.

4000420042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 4000419998 and 4000420025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142338 + ... + 168109.

It is an arithmetic number, because the mean of its divisors is an integer number (398149560).

Almost surely, 2^4000420042 is an apocalyptic number.

4000420042 is a deficient number, since it is larger than the sum of its proper divisors (2369972918).

4000420042 is a wasteful number, since it uses less digits than its factorization.

4000420042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310845.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 4000420042 is about 63248.8738397768. The cubic root of 4000420042 is about 1587.4566146161.

Adding to 4000420042 its reverse (2400240004), we get a palindrome (6400660046).

The spelling of 4000420042 in words is "four billion, four hundred twenty thousand, forty-two".