442144451 has 8 divisors (see below), whose sum is σ = 517632864. Its totient is φ = 369737280.

The previous prime is 442144441. The next prime is 442144481. The reversal of 442144451 is 154441244.

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

It is a cyclic number.

It is not a de Polignac number, because 442144451 - 2²² = 437950147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442144441) 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, 770000 + ... + 770573.

It is an arithmetic number, because the mean of its divisors is an integer number (64704108).

Almost surely, 2^442144451 is an apocalyptic number.

442144451 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

442144451 is a deficient number, since it is larger than the sum of its proper divisors (75488413).

442144451 is a wasteful number, since it uses less digits than its factorization.

442144451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1540621.

The product of its digits is 10240, while the sum is 29.

The square root of 442144451 is about 21027.2311776896. The cubic root of 442144451 is about 761.8241333770.

Adding to 442144451 its reverse (154441244), we get a palindrome (596585695).

The spelling of 442144451 in words is "four hundred forty-two million, one hundred forty-four thousand, four hundred fifty-one".