1142425231 has 2 divisors, whose sum is σ = 1142425232. Its totient is φ = 1142425230.

The previous prime is 1142425199. The next prime is 1142425259. The reversal of 1142425231 is 1325242411.

It is a strong prime.

It is an emirp because it is prime and its reverse (1325242411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142425231 - 2⁵ = 1142425199 is a prime.

It is a super-2 number, since 2×1142425231² = 2610270816850806722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142425196 and 1142425205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142425831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571212615 + 571212616.

It is an arithmetic number, because the mean of its divisors is an integer number (571212616).

Almost surely, 2^1142425231 is an apocalyptic number.

1142425231 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142425231 is an equidigital number, since it uses as much as digits as its factorization.

1142425231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1920, while the sum is 25.

The square root of 1142425231 is about 33799.7815229625. The cubic root of 1142425231 is about 1045.3841924270.

Adding to 1142425231 its reverse (1325242411), we get a palindrome (2467667642).

The spelling of 1142425231 in words is "one billion, one hundred forty-two million, four hundred twenty-five thousand, two hundred thirty-one".