400125143 has 8 divisors (see below), whose sum is σ = 444736656. Its totient is φ = 356886400.

The previous prime is 400125137. The next prime is 400125163. The reversal of 400125143 is 341521004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 400125143 - 2¹⁶ = 400059607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400125163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342578 + ... + 343743.

It is an arithmetic number, because the mean of its divisors is an integer number (55592082).

Almost surely, 2^400125143 is an apocalyptic number.

400125143 is a deficient number, since it is larger than the sum of its proper divisors (44611513).

400125143 is a wasteful number, since it uses less digits than its factorization.

400125143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686385.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 400125143 is about 20003.1283303387. The cubic root of 400125143 is about 736.8831301753.

Adding to 400125143 its reverse (341521004), we get a palindrome (741646147).

The spelling of 400125143 in words is "four hundred million, one hundred twenty-five thousand, one hundred forty-three".