4002742 has 4 divisors (see below), whose sum is σ = 6004116. Its totient is φ = 2001370.

The previous prime is 4002727. The next prime is 4002743. The reversal of 4002742 is 2472004.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000684 + ... + 1000687.

It is an arithmetic number, because the mean of its divisors is an integer number (1501029).

Almost surely, 2^4002742 is an apocalyptic number.

4002742 is a deficient number, since it is larger than the sum of its proper divisors (2001374).

4002742 is a wasteful number, since it uses less digits than its factorization.

4002742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001373.

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 4002742 is about 2000.6853825627. The cubic root of 4002742 is about 158.7763690258.

Adding to 4002742 its reverse (2472004), we get a palindrome (6474746).

The spelling of 4002742 in words is "four million, two thousand, seven hundred forty-two".