401012535 has 32 divisors (see below), whose sum is σ = 799944192. Its totient is φ = 166654080.

The previous prime is 401012503. The next prime is 401012569. The reversal of 401012535 is 535210104.

It is not a de Polignac number, because 401012535 - 2⁵ = 401012503 is a prime.

It is a super-2 number, since 2×401012535² = 321622106454252450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 172444 + ... + 174753.

It is an arithmetic number, because the mean of its divisors is an integer number (24998256).

Almost surely, 2^401012535 is an apocalyptic number.

401012535 is a deficient number, since it is larger than the sum of its proper divisors (398931657).

401012535 is a wasteful number, since it uses less digits than its factorization.

401012535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347223.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 401012535 is about 20025.2973760691. The cubic root of 401012535 is about 737.4274776911.

Adding to 401012535 its reverse (535210104), we get a palindrome (936222639).

The spelling of 401012535 in words is "four hundred one million, twelve thousand, five hundred thirty-five".