1442857239 has 16 divisors (see below), whose sum is σ = 2139101440. Its totient is φ = 961214040.

The previous prime is 1442857223. The next prime is 1442857301. The reversal of 1442857239 is 9327582441.

1442857239 is a `hidden beast` number, since 1 + 4 + 42 + 8 + 572 + 39 = 666.

It is not a de Polignac number, because 1442857239 - 2⁴ = 1442857223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1442857194 and 1442857203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442857219) 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, 20604 + ... + 57534.

It is an arithmetic number, because the mean of its divisors is an integer number (133693840).

Almost surely, 2^1442857239 is an apocalyptic number.

1442857239 is a deficient number, since it is larger than the sum of its proper divisors (696244201).

1442857239 is a wasteful number, since it uses less digits than its factorization.

1442857239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38387 (or 38381 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1442857239 is about 37984.9606949909. The cubic root of 1442857239 is about 1129.9896203396.

The spelling of 1442857239 in words is "one billion, four hundred forty-two million, eight hundred fifty-seven thousand, two hundred thirty-nine".