400152143 has 4 divisors (see below), whose sum is σ = 405217440. Its totient is φ = 395086848.

The previous prime is 400152139. The next prime is 400152161. The reversal of 400152143 is 341251004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400152143 - 2² = 400152139 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 (400152163) 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 3 ways as a sum of consecutive naturals, for example, 2532530 + ... + 2532687.

It is an arithmetic number, because the mean of its divisors is an integer number (101304360).

Almost surely, 2^400152143 is an apocalyptic number.

400152143 is a deficient number, since it is larger than the sum of its proper divisors (5065297).

400152143 is an equidigital number, since it uses as much as digits as its factorization.

400152143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5065296.

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

The square root of 400152143 is about 20003.8032133892. The cubic root of 400152143 is about 736.8997044874.

The spelling of 400152143 in words is "four hundred million, one hundred fifty-two thousand, one hundred forty-three".