1442043394 has 24 divisors (see below), whose sum is σ = 2517449004. Its totient is φ = 616915200.

The previous prime is 1442043373. The next prime is 1442043401. The reversal of 1442043394 is 4933402441.

It can be written as a sum of positive squares in 2 ways, for example, as 1181640625 + 260402769 = 34375^2 + 16137^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171147 + ... + 179374.

Almost surely, 2^1442043394 is an apocalyptic number.

1442043394 is a deficient number, since it is larger than the sum of its proper divisors (1075405610).

1442043394 is a wasteful number, since it uses less digits than its factorization.

1442043394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350562 (or 350551 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 1442043394 is about 37974.2464573031. The cubic root of 1442043394 is about 1129.7771231409. Note that the first 3 decimals are identical.

The spelling of 1442043394 in words is "one billion, four hundred forty-two million, forty-three thousand, three hundred ninety-four".