1442340431 has 12 divisors (see below), whose sum is σ = 1680519600. Its totient is φ = 1234306080.

The previous prime is 1442340391. The next prime is 1442340439. The reversal of 1442340431 is 1340432441.

It is a de Polignac number, because none of the positive numbers 2^k-1442340431 is a prime.

It is a super-2 number, since 2×1442340431² = 4160691837794531522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1442340431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442340439) 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 11 ways as a sum of consecutive naturals, for example, 7595 + ... + 54243.

It is an arithmetic number, because the mean of its divisors is an integer number (140043300).

Almost surely, 2^1442340431 is an apocalyptic number.

1442340431 is a deficient number, since it is larger than the sum of its proper divisors (238179169).

1442340431 is an equidigital number, since it uses as much as digits as its factorization.

1442340431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47294 (or 47287 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 1442340431 is about 37978.1572881044. The cubic root of 1442340431 is about 1129.8546895927.

Adding to 1442340431 its reverse (1340432441), we get a palindrome (2782772872).

The spelling of 1442340431 in words is "one billion, four hundred forty-two million, three hundred forty thousand, four hundred thirty-one".