4042642 has 4 divisors (see below), whose sum is σ = 6063966. Its totient is φ = 2021320.

The previous prime is 4042639. The next prime is 4042673. The reversal of 4042642 is 2462404.

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., 4036081 + 6561 = 2009^2 + 81^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010659 + ... + 1010662.

Almost surely, 2^4042642 is an apocalyptic number.

4042642 is a deficient number, since it is larger than the sum of its proper divisors (2021324).

4042642 is a wasteful number, since it uses less digits than its factorization.

4042642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021323.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 4042642 is about 2010.6322388741. The cubic root of 4042642 is about 159.3021954796.

The spelling of 4042642 in words is "four million, forty-two thousand, six hundred forty-two".