4000742 has 4 divisors (see below), whose sum is σ = 6001116. Its totient is φ = 2000370.

The previous prime is 4000741. The next prime is 4000747. The reversal of 4000742 is 2470004.

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

It is a self number, because there is not a number n which added to its sum of digits gives 4000742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4000741) 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, 1000184 + ... + 1000187.

It is an arithmetic number, because the mean of its divisors is an integer number (1500279).

Almost surely, 2^4000742 is an apocalyptic number.

4000742 is a deficient number, since it is larger than the sum of its proper divisors (2000374).

4000742 is a wasteful number, since it uses less digits than its factorization.

4000742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2000373.

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 4000742 is about 2000.1854913982. The cubic root of 4000742 is about 158.7499200198.

Adding to 4000742 its reverse (2470004), we get a palindrome (6470746).

The spelling of 4000742 in words is "four million, seven hundred forty-two", and thus it is an aban number.