1142657969 has 2 divisors, whose sum is σ = 1142657970. Its totient is φ = 1142657968.

The previous prime is 1142657959. The next prime is 1142657981. The reversal of 1142657969 is 9697562411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1005650944 + 137007025 = 31712^2 + 11705^2 .

It is an emirp because it is prime and its reverse (9697562411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142657969 - 2⁸ = 1142657713 is a prime.

It is a super-2 number, since 2×1142657969² = 2611334468238409922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1142657909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571328984 + 571328985.

It is an arithmetic number, because the mean of its divisors is an integer number (571328985).

Almost surely, 2^1142657969 is an apocalyptic number.

It is an amenable number.

1142657969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142657969 is an equidigital number, since it uses as much as digits as its factorization.

1142657969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 50.

The square root of 1142657969 is about 33803.2242397083. The cubic root of 1142657969 is about 1045.4551771180.

The spelling of 1142657969 in words is "one billion, one hundred forty-two million, six hundred fifty-seven thousand, nine hundred sixty-nine".