400240125 has 48 divisors (see below), whose sum is σ = 724239360. Its totient is φ = 212652000.

The previous prime is 400240103. The next prime is 400240133. The reversal of 400240125 is 521042004.

400240125 is a `hidden beast` number, since 400 + 240 + 1 + 25 = 666.

It is not a de Polignac number, because 400240125 - 2⁹ = 400239613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400240098 and 400240107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 403380 + ... + 404370.

It is an arithmetic number, because the mean of its divisors is an integer number (15088320).

Almost surely, 2^400240125 is an apocalyptic number.

400240125 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

400240125 is a deficient number, since it is larger than the sum of its proper divisors (323999235).

400240125 is a wasteful number, since it uses less digits than its factorization.

400240125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1371 (or 1358 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 400240125 is about 20006.0022243326. The cubic root of 400240125 is about 736.9537082456.

Adding to 400240125 its reverse (521042004), we get a palindrome (921282129).

The spelling of 400240125 in words is "four hundred million, two hundred forty thousand, one hundred twenty-five".