442144007 has 4 divisors (see below), whose sum is σ = 468152496. Its totient is φ = 416135520.

The previous prime is 442143997. The next prime is 442144033. The reversal of 442144007 is 700441244.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 442144007 - 2¹² = 442139911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442144037) 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, 13004219 + ... + 13004252.

It is an arithmetic number, because the mean of its divisors is an integer number (117038124).

Almost surely, 2^442144007 is an apocalyptic number.

442144007 is a deficient number, since it is larger than the sum of its proper divisors (26008489).

442144007 is a wasteful number, since it uses less digits than its factorization.

442144007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26008488.

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 442144007 is about 21027.2206199488. The cubic root of 442144007 is about 761.8238783698.

The spelling of 442144007 in words is "four hundred forty-two million, one hundred forty-four thousand, seven".