400442203000 has 256 divisors, whose sum is σ = 1100182487040. Its totient is φ = 133559424000.

The previous prime is 400442202967. The next prime is 400442203043. The reversal of 400442203000 is 302244004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 109919179 + ... + 109922821.

It is an arithmetic number, because the mean of its divisors is an integer number (4297587840).

Almost surely, 2^400442203000 is an apocalyptic number.

400442203000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400442203000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (550091243520).

400442203000 is an abundant number, since it is smaller than the sum of its proper divisors (699740284040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400442203000 is a wasteful number, since it uses less digits than its factorization.

400442203000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4095 (or 4081 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 400442203000 its reverse (302244004), we get a palindrome (400744447004).

The spelling of 400442203000 in words is "four hundred billion, four hundred forty-two million, two hundred three thousand".