400125441 has 16 divisors (see below), whose sum is σ = 558892800. Its totient is φ = 254287488.

The previous prime is 400125421. The next prime is 400125443. The reversal of 400125441 is 144521004.

It is a happy number.

It is not a de Polignac number, because 400125441 - 2⁶ = 400125377 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (400125443) 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, 22236 + ... + 35981.

It is an arithmetic number, because the mean of its divisors is an integer number (34930800).

Almost surely, 2^400125441 is an apocalyptic number.

It is an amenable number.

400125441 is a deficient number, since it is larger than the sum of its proper divisors (158767359).

400125441 is a wasteful number, since it uses less digits than its factorization.

400125441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58328.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 400125441 is about 20003.1357791722. The cubic root of 400125441 is about 736.8833131106.

Adding to 400125441 its reverse (144521004), we get a palindrome (544646445).

The spelling of 400125441 in words is "four hundred million, one hundred twenty-five thousand, four hundred forty-one".