400231042 has 8 divisors (see below), whose sum is σ = 607092300. Its totient is φ = 197866944.

The previous prime is 400231019. The next prime is 400231093. The reversal of 400231042 is 240132004.

It can be written as a sum of positive squares in 2 ways, for example, as 397165041 + 3066001 = 19929^2 + 1751^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1124067 + ... + 1124422.

Almost surely, 2^400231042 is an apocalyptic number.

400231042 is a deficient number, since it is larger than the sum of its proper divisors (206861258).

400231042 is a wasteful number, since it uses less digits than its factorization.

400231042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2248580.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 400231042 is about 20005.7752161720. The cubic root of 400231042 is about 736.9481334245.

Adding to 400231042 its reverse (240132004), we get a palindrome (640363046).

The spelling of 400231042 in words is "four hundred million, two hundred thirty-one thousand, forty-two".