1442357473 has 4 divisors (see below), whose sum is σ = 1442508480. Its totient is φ = 1442206468.

The previous prime is 1442357459. The next prime is 1442357489. The reversal of 1442357473 is 3747532441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3747532441 = 59 ⋅63517499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442357473 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442357443) 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, 60133 + ... + 80626.

It is an arithmetic number, because the mean of its divisors is an integer number (360627120).

Almost surely, 2^1442357473 is an apocalyptic number.

It is an amenable number.

1442357473 is a deficient number, since it is larger than the sum of its proper divisors (151007).

1442357473 is a wasteful number, since it uses less digits than its factorization.

1442357473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151006.

The product of its digits is 282240, while the sum is 40.

The square root of 1442357473 is about 37978.3816532511. The cubic root of 1442357473 is about 1129.8591395148.

The spelling of 1442357473 in words is "one billion, four hundred forty-two million, three hundred fifty-seven thousand, four hundred seventy-three".