402024643 has 4 divisors (see below), whose sum is σ = 408838680. Its totient is φ = 395210608.

The previous prime is 402024641. The next prime is 402024661. The reversal of 402024643 is 346420204.

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 402024643 - 2¹ = 402024641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402024641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3406930 + ... + 3407047.

It is an arithmetic number, because the mean of its divisors is an integer number (102209670).

Almost surely, 2^402024643 is an apocalyptic number.

402024643 is a deficient number, since it is larger than the sum of its proper divisors (6814037).

402024643 is an equidigital number, since it uses as much as digits as its factorization.

402024643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6814036.

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 402024643 is about 20050.5521869100. The cubic root of 402024643 is about 738.0473496058.

Adding to 402024643 its reverse (346420204), we get a palindrome (748444847).

The spelling of 402024643 in words is "four hundred two million, twenty-four thousand, six hundred forty-three".