400244421241 has 16 divisors (see below), whose sum is σ = 465253079040. Its totient is φ = 337231748880.

The previous prime is 400244421233. The next prime is 400244421263. The reversal of 400244421241 is 142124442004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 400244421241 - 2³ = 400244421233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400244421641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1468675 + ... + 1719736.

It is an arithmetic number, because the mean of its divisors is an integer number (29078317440).

Almost surely, 2^400244421241 is an apocalyptic number.

It is an amenable number.

400244421241 is a deficient number, since it is larger than the sum of its proper divisors (65008657799).

400244421241 is a wasteful number, since it uses less digits than its factorization.

400244421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3188724.

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 400244421241 its reverse (142124442004), we get a palindrome (542368863245).

The spelling of 400244421241 in words is "four hundred billion, two hundred forty-four million, four hundred twenty-one thousand, two hundred forty-one".