402324641 has 4 divisors (see below), whose sum is σ = 411681072. Its totient is φ = 392968212.

The previous prime is 402324619. The next prime is 402324647. The reversal of 402324641 is 146423204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 402324641 - 2⁶ = 402324577 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402324641.

It is not an unprimeable number, because it can be changed into a prime (402324647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4678151 + ... + 4678236.

It is an arithmetic number, because the mean of its divisors is an integer number (102920268).

Almost surely, 2^402324641 is an apocalyptic number.

It is an amenable number.

402324641 is a deficient number, since it is larger than the sum of its proper divisors (9356431).

402324641 is an equidigital number, since it uses as much as digits as its factorization.

402324641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9356430.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 402324641 is about 20058.0318326600. The cubic root of 402324641 is about 738.2308853512.

Adding to 402324641 its reverse (146423204), we get a palindrome (548747845).

The spelling of 402324641 in words is "four hundred two million, three hundred twenty-four thousand, six hundred forty-one".