402500543 has 4 divisors (see below), whose sum is σ = 402624288. Its totient is φ = 402376800.

The previous prime is 402500533. The next prime is 402500563. The reversal of 402500543 is 345005204.

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 402500543 - 2¹⁰ = 402499519 is a prime.

It is a super-3 number, since 3×402500543³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402500533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56858 + ... + 63543.

It is an arithmetic number, because the mean of its divisors is an integer number (100656072).

Almost surely, 2^402500543 is an apocalyptic number.

402500543 is a deficient number, since it is larger than the sum of its proper divisors (123745).

402500543 is a wasteful number, since it uses less digits than its factorization.

402500543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123744.

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 402500543 is about 20062.4161805103. The cubic root of 402500543 is about 738.3384579891.

Adding to 402500543 its reverse (345005204), we get a palindrome (747505747).

The spelling of 402500543 in words is "four hundred two million, five hundred thousand, five hundred forty-three".