402201001 has 4 divisors (see below), whose sum is σ = 402827152. Its totient is φ = 401574852.

The previous prime is 402200993. The next prime is 402201031. The reversal of 402201001 is 100102204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402201001 - 2³ = 402200993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402201031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 312111 + ... + 313396.

It is an arithmetic number, because the mean of its divisors is an integer number (100706788).

Almost surely, 2^402201001 is an apocalyptic number.

It is an amenable number.

402201001 is a deficient number, since it is larger than the sum of its proper divisors (626151).

402201001 is an equidigital number, since it uses as much as digits as its factorization.

402201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626150.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 402201001 is about 20054.9495387049. The cubic root of 402201001 is about 738.1552547046.

Adding to 402201001 its reverse (100102204), we get a palindrome (502303205).

The spelling of 402201001 in words is "four hundred two million, two hundred one thousand, one".