401265111 has 32 divisors (see below), whose sum is σ = 594001408. Its totient is φ = 239345280.

The previous prime is 401265097. The next prime is 401265119. The reversal of 401265111 is 111562104.

It is not a de Polignac number, because 401265111 - 2¹⁵ = 401232343 is a prime.

It is a super-2 number, since 2×401265111² = 322027378611684642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401265119) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 702456 + ... + 703026.

It is an arithmetic number, because the mean of its divisors is an integer number (18562544).

Almost surely, 2^401265111 is an apocalyptic number.

401265111 is a deficient number, since it is larger than the sum of its proper divisors (192736297).

401265111 is a wasteful number, since it uses less digits than its factorization.

401265111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 401265111 is about 20031.6028065654. The cubic root of 401265111 is about 737.5822670271.

The spelling of 401265111 in words is "four hundred one million, two hundred sixty-five thousand, one hundred eleven".