400741023 has 4 divisors (see below), whose sum is σ = 534321368. Its totient is φ = 267160680.

The previous prime is 400740997. The next prime is 400741057. The reversal of 400741023 is 320147004.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 400741023 - 2¹² = 400736927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400741723) 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, 66790168 + ... + 66790173.

It is an arithmetic number, because the mean of its divisors is an integer number (133580342).

Almost surely, 2^400741023 is an apocalyptic number.

400741023 is a deficient number, since it is larger than the sum of its proper divisors (133580345).

400741023 is a wasteful number, since it uses less digits than its factorization.

400741023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133580344.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 400741023 is about 20018.5170030150. The cubic root of 400741023 is about 737.2610110628.

Adding to 400741023 its reverse (320147004), we get a palindrome (720888027).

The spelling of 400741023 in words is "four hundred million, seven hundred forty-one thousand, twenty-three".