402143597 has 2 divisors, whose sum is σ = 402143598. Its totient is φ = 402143596.

The previous prime is 402143593. The next prime is 402143629. The reversal of 402143597 is 795341204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 321341476 + 80802121 = 17926^2 + 8989^2 .

It is a cyclic number.

It is not a de Polignac number, because 402143597 - 2² = 402143593 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402143593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201071798 + 201071799.

It is an arithmetic number, because the mean of its divisors is an integer number (201071799).

Almost surely, 2^402143597 is an apocalyptic number.

It is an amenable number.

402143597 is a deficient number, since it is larger than the sum of its proper divisors (1).

402143597 is an equidigital number, since it uses as much as digits as its factorization.

402143597 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 402143597 is about 20053.5183197363. The cubic root of 402143597 is about 738.1201353818.

The spelling of 402143597 in words is "four hundred two million, one hundred forty-three thousand, five hundred ninety-seven".