1142534989 has 2 divisors, whose sum is σ = 1142534990. Its totient is φ = 1142534988.

The previous prime is 1142534957. The next prime is 1142534993. The reversal of 1142534989 is 9894352411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1142102025 + 432964 = 33795^2 + 658^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142534989 - 2⁵ = 1142534957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142534909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571267494 + 571267495.

It is an arithmetic number, because the mean of its divisors is an integer number (571267495).

Almost surely, 2^1142534989 is an apocalyptic number.

It is an amenable number.

1142534989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142534989 is an equidigital number, since it uses as much as digits as its factorization.

1142534989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 311040, while the sum is 46.

The square root of 1142534989 is about 33801.4051335148. The cubic root of 1142534989 is about 1045.4176696299.

The spelling of 1142534989 in words is "one billion, one hundred forty-two million, five hundred thirty-four thousand, nine hundred eighty-nine".