1442245531 has 2 divisors, whose sum is σ = 1442245532. Its totient is φ = 1442245530.

The previous prime is 1442245411. The next prime is 1442245537. The reversal of 1442245531 is 1355422441.

It is a strong prime.

It is an emirp because it is prime and its reverse (1355422441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1442245531 - 2¹⁵ = 1442212763 is a prime.

It is a super-2 number, since 2×1442245531² = 4160144343378943922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1442245493 and 1442245502.

It is not a weakly prime, because it can be changed into another prime (1442245537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721122765 + 721122766.

It is an arithmetic number, because the mean of its divisors is an integer number (721122766).

Almost surely, 2^1442245531 is an apocalyptic number.

1442245531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442245531 is an equidigital number, since it uses as much as digits as its factorization.

1442245531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19200, while the sum is 31.

The square root of 1442245531 is about 37976.9078651751. The cubic root of 1442245531 is about 1129.8299091365.

Adding to 1442245531 its reverse (1355422441), we get a palindrome (2797667972).

The spelling of 1442245531 in words is "one billion, four hundred forty-two million, two hundred forty-five thousand, five hundred thirty-one".