1442731307 has 4 divisors (see below), whose sum is σ = 1467184440. Its totient is φ = 1418278176.

The previous prime is 1442731267. The next prime is 1442731331. The reversal of 1442731307 is 7031372441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1442731307 - 2⁶ = 1442731243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1442731337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12226478 + ... + 12226595.

It is an arithmetic number, because the mean of its divisors is an integer number (366796110).

Almost surely, 2^1442731307 is an apocalyptic number.

1442731307 is a deficient number, since it is larger than the sum of its proper divisors (24453133).

1442731307 is an equidigital number, since it uses as much as digits as its factorization.

1442731307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24453132.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 1442731307 is about 37983.3030027669. The cubic root of 1442731307 is about 1129.9567443698.

The spelling of 1442731307 in words is "one billion, four hundred forty-two million, seven hundred thirty-one thousand, three hundred seven".