401842901 has 4 divisors (see below), whose sum is σ = 406929600. Its totient is φ = 396756204.

The previous prime is 401842897. The next prime is 401842999. The reversal of 401842901 is 109248104.

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 401842901 - 2² = 401842897 is a prime.

It is a super-2 number, since 2×401842901² = 322955434168191602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401802901) 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, 2543231 + ... + 2543388.

It is an arithmetic number, because the mean of its divisors is an integer number (101732400).

Almost surely, 2^401842901 is an apocalyptic number.

It is an amenable number.

401842901 is a deficient number, since it is larger than the sum of its proper divisors (5086699).

401842901 is an equidigital number, since it uses as much as digits as its factorization.

401842901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5086698.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 401842901 is about 20046.0195799565. The cubic root of 401842901 is about 737.9361172710.

The spelling of 401842901 in words is "four hundred one million, eight hundred forty-two thousand, nine hundred one".