402003001 has 8 divisors (see below), whose sum is σ = 411675264. Its totient is φ = 392345520.

The previous prime is 402002999. The next prime is 402003013. The reversal of 402003001 is 100300204.

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

It is a cyclic number.

It is not a de Polignac number, because 402003001 - 2¹ = 402002999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402003031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67536 + ... + 73246.

It is an arithmetic number, because the mean of its divisors is an integer number (51459408).

Almost surely, 2^402003001 is an apocalyptic number.

It is an amenable number.

402003001 is a deficient number, since it is larger than the sum of its proper divisors (9672263).

402003001 is a wasteful number, since it uses less digits than its factorization.

402003001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7391.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 402003001 is about 20050.0124937617. The cubic root of 402003001 is about 738.0341057184.

Adding to 402003001 its reverse (100300204), we get a palindrome (502303205).

The spelling of 402003001 in words is "four hundred two million, three thousand, one".