400041040122 has 12 divisors (see below), whose sum is σ = 866755586970. Its totient is φ = 133347013368.

The previous prime is 400041040121. The next prime is 400041040151. The reversal of 400041040122 is 221040140004.

It can be written as a sum of positive squares in only one way, i.e., 271598364801 + 128442675321 = 521151^2 + 358389^2 .

It is a super-2 number, since 2×400041040122² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 22224502229 = 400041040122 / (4 + 0 + 0 + 0 + 4 + 1 + 0 + 4 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 400041040095 and 400041040104.

It is not an unprimeable number, because it can be changed into a prime (400041040121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11112251097 + ... + 11112251132.

Almost surely, 2^400041040122 is an apocalyptic number.

400041040122 is an abundant number, since it is smaller than the sum of its proper divisors (466714546848).

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

400041040122 is a wasteful number, since it uses less digits than its factorization.

400041040122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22224502237 (or 22224502234 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 400041040122 its reverse (221040140004), we get a palindrome (621081180126).

The spelling of 400041040122 in words is "four hundred billion, forty-one million, forty thousand, one hundred twenty-two".