400113043 has 8 divisors (see below), whose sum is σ = 443885760. Its totient is φ = 357573480.

The previous prime is 400113019. The next prime is 400113047. The reversal of 400113043 is 340311004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-400113043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400113047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307605 + ... + 308902.

It is an arithmetic number, because the mean of its divisors is an integer number (55485720).

Almost surely, 2^400113043 is an apocalyptic number.

400113043 is a deficient number, since it is larger than the sum of its proper divisors (43772717).

400113043 is a wasteful number, since it uses less digits than its factorization.

400113043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616577.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 400113043 is about 20002.8258753607. The cubic root of 400113043 is about 736.8757021861.

Adding to 400113043 its reverse (340311004), we get a palindrome (740424047).

The spelling of 400113043 in words is "four hundred million, one hundred thirteen thousand, forty-three".