402543667 has 2 divisors, whose sum is σ = 402543668. Its totient is φ = 402543666.

The previous prime is 402543653. The next prime is 402543679. The reversal of 402543667 is 766345204.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 402543667 - 2¹⁹ = 402019379 is a prime.

It is not a weakly prime, because it can be changed into another prime (402573667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201271833 + 201271834.

It is an arithmetic number, because the mean of its divisors is an integer number (201271834).

Almost surely, 2^402543667 is an apocalyptic number.

402543667 is a deficient number, since it is larger than the sum of its proper divisors (1).

402543667 is an equidigital number, since it uses as much as digits as its factorization.

402543667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 402543667 is about 20063.4908976479. The cubic root of 402543667 is about 738.3648256311.

The spelling of 402543667 in words is "four hundred two million, five hundred forty-three thousand, six hundred sixty-seven".