402122543 has 4 divisors (see below), whose sum is σ = 408124440. Its totient is φ = 396120648.

The previous prime is 402122533. The next prime is 402122551. The reversal of 402122543 is 345221204.

It is a happy number.

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 402122543 - 2²⁸ = 133687087 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 (402122533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3000848 + ... + 3000981.

It is an arithmetic number, because the mean of its divisors is an integer number (102031110).

Almost surely, 2^402122543 is an apocalyptic number.

402122543 is a deficient number, since it is larger than the sum of its proper divisors (6001897).

402122543 is an equidigital number, since it uses as much as digits as its factorization.

402122543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6001896.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402122543 is about 20052.9933675748. The cubic root of 402122543 is about 738.1072538700.

Adding to 402122543 its reverse (345221204), we get a palindrome (747343747).

The spelling of 402122543 in words is "four hundred two million, one hundred twenty-two thousand, five hundred forty-three".