401023043 has 4 divisors (see below), whose sum is σ = 401070288. Its totient is φ = 400975800.

The previous prime is 401023001. The next prime is 401023067. The reversal of 401023043 is 340320104.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401023043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401023093) 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, 6983 + ... + 29168.

It is an arithmetic number, because the mean of its divisors is an integer number (100267572).

Almost surely, 2^401023043 is an apocalyptic number.

401023043 is a deficient number, since it is larger than the sum of its proper divisors (47245).

401023043 is a wasteful number, since it uses less digits than its factorization.

401023043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47244.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 401023043 is about 20025.5597424891. The cubic root of 401023043 is about 737.4339187368.

Adding to 401023043 its reverse (340320104), we get a palindrome (741343147).

The spelling of 401023043 in words is "four hundred one million, twenty-three thousand, forty-three".