400042212234 has 64 divisors (see below), whose sum is σ = 939464697600. Its totient is φ = 111164894208.

The previous prime is 400042212173. The next prime is 400042212281. The reversal of 400042212234 is 432212240004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4005052 + ... + 4103720.

It is an arithmetic number, because the mean of its divisors is an integer number (14679135900).

Almost surely, 2^400042212234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400042212234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469732348800).

400042212234 is an abundant number, since it is smaller than the sum of its proper divisors (539422485366).

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

400042212234 is a wasteful number, since it uses less digits than its factorization.

400042212234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101327.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 400042212234 its reverse (432212240004), we get a palindrome (832254452238).

The spelling of 400042212234 in words is "four hundred billion, forty-two million, two hundred twelve thousand, two hundred thirty-four".