442725143 has 6 divisors (see below), whose sum is σ = 515006856. Its totient is φ = 379478652.

The previous prime is 442725139. The next prime is 442725149. The reversal of 442725143 is 341527244.

It is not a de Polignac number, because 442725143 - 2² = 442725139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442725149) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4517555 + ... + 4517652.

It is an arithmetic number, because the mean of its divisors is an integer number (85834476).

Almost surely, 2^442725143 is an apocalyptic number.

442725143 is a deficient number, since it is larger than the sum of its proper divisors (72281713).

442725143 is an equidigital number, since it uses as much as digits as its factorization.

442725143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9035221 (or 9035214 counting only the distinct ones).

The product of its digits is 26880, while the sum is 32.

The square root of 442725143 is about 21041.0347416661. The cubic root of 442725143 is about 762.1575022948.

The spelling of 442725143 in words is "four hundred forty-two million, seven hundred twenty-five thousand, one hundred forty-three".