400121130444 has 96 divisors (see below), whose sum is σ = 1102547712000. Its totient is φ = 112873138560.

The previous prime is 400121130391. The next prime is 400121130463. The reversal of 400121130444 is 444031121004.

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, 290097 + ... + 940424.

It is an arithmetic number, because the mean of its divisors is an integer number (11484872000).

Almost surely, 2^400121130444 is an apocalyptic number.

It is an amenable number.

400121130444 is an abundant number, since it is smaller than the sum of its proper divisors (702426581556).

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

400121130444 is a wasteful number, since it uses less digits than its factorization.

400121130444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1230628 (or 1230612 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 400121130444 its reverse (444031121004), we get a palindrome (844152251448).

The spelling of 400121130444 in words is "four hundred billion, one hundred twenty-one million, one hundred thirty thousand, four hundred forty-four".