4002542 has 8 divisors (see below), whose sum is σ = 6012336. Its totient is φ = 1998432.

The previous prime is 4002527. The next prime is 4002547. The reversal of 4002542 is 2452004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 4002542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4002547) 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 in 3 ways as a sum of consecutive naturals, for example, 1823 + ... + 3365.

It is an arithmetic number, because the mean of its divisors is an integer number (751542).

Almost surely, 2^4002542 is an apocalyptic number.

4002542 is a deficient number, since it is larger than the sum of its proper divisors (2009794).

4002542 is a wasteful number, since it uses less digits than its factorization.

4002542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 4002542 is about 2000.6353990670. The cubic root of 4002542 is about 158.7737245217.

Adding to 4002542 its reverse (2452004), we get a palindrome (6454546).

The spelling of 4002542 in words is "four million, two thousand, five hundred forty-two".