402246451 has 4 divisors (see below), whose sum is σ = 402293304. Its totient is φ = 402199600.

The previous prime is 402246431. The next prime is 402246457. The reversal of 402246451 is 154642204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 402246451 - 2⁵ = 402246419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402246457) 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, 6445 + ... + 29086.

It is an arithmetic number, because the mean of its divisors is an integer number (100573326).

Almost surely, 2^402246451 is an apocalyptic number.

402246451 is a deficient number, since it is larger than the sum of its proper divisors (46853).

402246451 is a wasteful number, since it uses less digits than its factorization.

402246451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46852.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 402246451 is about 20056.0826434277. The cubic root of 402246451 is about 738.1830582925.

Adding to 402246451 its reverse (154642204), we get a palindrome (556888655).

The spelling of 402246451 in words is "four hundred two million, two hundred forty-six thousand, four hundred fifty-one".