400243041304 has 32 divisors (see below), whose sum is σ = 795199308480. Its totient is φ = 188207645184.

The previous prime is 400243041293. The next prime is 400243041323. The reversal of 400243041304 is 403140342004.

It is a super-2 number, since 2×400243041304² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928407 + ... + 1289350.

It is an arithmetic number, because the mean of its divisors is an integer number (24849978390).

Almost surely, 2^400243041304 is an apocalyptic number.

It is an amenable number.

400243041304 is a deficient number, since it is larger than the sum of its proper divisors (394956267176).

400243041304 is a wasteful number, since it uses less digits than its factorization.

400243041304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219107 (or 2219103 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 400243041304 its reverse (403140342004), we get a palindrome (803383383308).

The spelling of 400243041304 in words is "four hundred billion, two hundred forty-three million, forty-one thousand, three hundred four".