442424451 has 8 divisors (see below), whose sum is σ = 674170624. Its totient is φ = 252813960.

The previous prime is 442424447. The next prime is 442424453. The reversal of 442424451 is 154424244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442424451 - 2² = 442424447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442424453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10533895 + ... + 10533936.

It is an arithmetic number, because the mean of its divisors is an integer number (84271328).

Almost surely, 2^442424451 is an apocalyptic number.

442424451 is a deficient number, since it is larger than the sum of its proper divisors (231746173).

442424451 is a wasteful number, since it uses less digits than its factorization.

442424451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21067841.

The product of its digits is 20480, while the sum is 30.

The square root of 442424451 is about 21033.8881569718. Note that the first 3 decimals coincide. The cubic root of 442424451 is about 761.9849147267.

Adding to 442424451 its reverse (154424244), we get a palindrome (596848695).

The spelling of 442424451 in words is "four hundred forty-two million, four hundred twenty-four thousand, four hundred fifty-one".