442780143 has 16 divisors (see below), whose sum is σ = 636326880. Its totient is φ = 272248704.

The previous prime is 442780111. The next prime is 442780193. The reversal of 442780143 is 341087244.

It is not a de Polignac number, because 442780143 - 2⁵ = 442780111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442780193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49413 + ... + 57681.

It is an arithmetic number, because the mean of its divisors is an integer number (39770430).

Almost surely, 2^442780143 is an apocalyptic number.

442780143 is a deficient number, since it is larger than the sum of its proper divisors (193546737).

442780143 is a wasteful number, since it uses less digits than its factorization.

442780143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9658.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 442780143 is about 21042.3416710213. The cubic root of 442780143 is about 762.1890620767.

The spelling of 442780143 in words is "four hundred forty-two million, seven hundred eighty thousand, one hundred forty-three".