4001002 has 8 divisors (see below), whose sum is σ = 6047712. Its totient is φ = 1985100.

The previous prime is 4000993. The next prime is 4001003. The reversal of 4001002 is 2001004.

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

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4001003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7374 + ... + 7897.

It is an arithmetic number, because the mean of its divisors is an integer number (755964).

Almost surely, 2^4001002 is an apocalyptic number.

4001002 is a deficient number, since it is larger than the sum of its proper divisors (2046710).

4001002 is a wasteful number, since it uses less digits than its factorization.

4001002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15404.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 4001002 is about 2000.2504843144. The cubic root of 4001002 is about 158.7533588890.

Adding to 4001002 its reverse (2001004), we get a palindrome (6002006).

The spelling of 4001002 in words is "four million, one thousand, two".