4042046642 has 4 divisors (see below), whose sum is σ = 6063069966. Its totient is φ = 2021023320.

The previous prime is 4042046629. The next prime is 4042046647. The reversal of 4042046642 is 2466402404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3836439721 + 205606921 = 61939^2 + 14339^2 .

It is a super-2 number, since 2×4042046642² = 32676282112206952328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4042046599 and 4042046608.

It is not an unprimeable number, because it can be changed into a prime (4042046647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010511659 + ... + 1010511662.

Almost surely, 2^4042046642 is an apocalyptic number.

4042046642 is a deficient number, since it is larger than the sum of its proper divisors (2021023324).

4042046642 is a wasteful number, since it uses less digits than its factorization.

4042046642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021023323.

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 4042046642 is about 63577.0921165792. The cubic root of 4042046642 is about 1592.9437497567.

The spelling of 4042046642 in words is "four billion, forty-two million, forty-six thousand, six hundred forty-two".