401842511 has 4 divisors (see below), whose sum is σ = 459248592. Its totient is φ = 344436432.

The previous prime is 401842489. The next prime is 401842513. The reversal of 401842511 is 115248104.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401842511 is a prime.

It is a super-2 number, since 2×401842511² = 322954807293570242, 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 (401842513) 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, 28703030 + ... + 28703043.

It is an arithmetic number, because the mean of its divisors is an integer number (114812148).

Almost surely, 2^401842511 is an apocalyptic number.

401842511 is a deficient number, since it is larger than the sum of its proper divisors (57406081).

401842511 is an equidigital number, since it uses as much as digits as its factorization.

401842511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57406080.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 401842511 is about 20046.0098523372. The cubic root of 401842511 is about 737.9358785416.

The spelling of 401842511 in words is "four hundred one million, eight hundred forty-two thousand, five hundred eleven".