422403451 has 4 divisors (see below), whose sum is σ = 423736272. Its totient is φ = 421070632.

The previous prime is 422403413. The next prime is 422403493. The reversal of 422403451 is 154304224.

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 422403451 - 2¹¹ = 422401403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (422403251) 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, 665935 + ... + 666568.

It is an arithmetic number, because the mean of its divisors is an integer number (105934068).

Almost surely, 2^422403451 is an apocalyptic number.

422403451 is a deficient number, since it is larger than the sum of its proper divisors (1332821).

422403451 is a wasteful number, since it uses less digits than its factorization.

422403451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1332820.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 422403451 is about 20552.4560819382. The cubic root of 422403451 is about 750.3130254834.

Adding to 422403451 its reverse (154304224), we get a palindrome (576707675).

The spelling of 422403451 in words is "four hundred twenty-two million, four hundred three thousand, four hundred fifty-one".