401422155 has 16 divisors (see below), whose sum is σ = 642603264. Its totient is φ = 213982560.

The previous prime is 401422127. The next prime is 401422169. The reversal of 401422155 is 551224104.

It is not a de Polignac number, because 401422155 - 2⁵ = 401422123 is a prime.

It is a super-2 number, since 2×401422155² = 322279493049688050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29922 + ... + 41208.

It is an arithmetic number, because the mean of its divisors is an integer number (40162704).

Almost surely, 2^401422155 is an apocalyptic number.

401422155 is a deficient number, since it is larger than the sum of its proper divisors (241181109).

401422155 is a wasteful number, since it uses less digits than its factorization.

401422155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13666.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 401422155 is about 20035.5223291034. The cubic root of 401422155 is about 737.6784775359.

Adding to 401422155 its reverse (551224104), we get a palindrome (952646259).

The spelling of 401422155 in words is "four hundred one million, four hundred twenty-two thousand, one hundred fifty-five".