1442543131 has 2 divisors, whose sum is σ = 1442543132. Its totient is φ = 1442543130.

The previous prime is 1442543117. The next prime is 1442543171. The reversal of 1442543131 is 1313452441.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1442543131 is a prime.

It is a super-2 number, since 2×1442543131² = 4161861369590566322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1442543131.

It is not a weakly prime, because it can be changed into another prime (1442543171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721271565 + 721271566.

It is an arithmetic number, because the mean of its divisors is an integer number (721271566).

Almost surely, 2^1442543131 is an apocalyptic number.

1442543131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442543131 is an equidigital number, since it uses as much as digits as its factorization.

1442543131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 28.

The square root of 1442543131 is about 37980.8258335703. The cubic root of 1442543131 is about 1129.9076153359.

Adding to 1442543131 its reverse (1313452441), we get a palindrome (2755995572).

The spelling of 1442543131 in words is "one billion, four hundred forty-two million, five hundred forty-three thousand, one hundred thirty-one".