400610143 has 2 divisors, whose sum is σ = 400610144. Its totient is φ = 400610142.

The previous prime is 400610129. The next prime is 400610167. The reversal of 400610143 is 341016004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400610143 - 2²¹ = 398512991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400610143.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400610173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200305071 + 200305072.

It is an arithmetic number, because the mean of its divisors is an integer number (200305072).

Almost surely, 2^400610143 is an apocalyptic number.

400610143 is a deficient number, since it is larger than the sum of its proper divisors (1).

400610143 is an equidigital number, since it uses as much as digits as its factorization.

400610143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 400610143 is about 20015.2477626434. The cubic root of 400610143 is about 737.1807404124.

Adding to 400610143 its reverse (341016004), we get a palindrome (741626147).

The spelling of 400610143 in words is "four hundred million, six hundred ten thousand, one hundred forty-three".