1142573681 has 2 divisors, whose sum is σ = 1142573682. Its totient is φ = 1142573680.

The previous prime is 1142573633. The next prime is 1142573687. The reversal of 1142573681 is 1863752411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1087680400 + 54893281 = 32980^2 + 7409^2 .

It is an emirp because it is prime and its reverse (1863752411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142573681 - 2³⁰ = 68831857 is a prime.

It is a super-2 number, since 2×1142573681² = 2610949233027779522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1142573687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571286840 + 571286841.

It is an arithmetic number, because the mean of its divisors is an integer number (571286841).

Almost surely, 2^1142573681 is an apocalyptic number.

It is an amenable number.

1142573681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142573681 is an equidigital number, since it uses as much as digits as its factorization.

1142573681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 38.

The square root of 1142573681 is about 33801.9774717397. The cubic root of 1142573681 is about 1045.4294705359.

The spelling of 1142573681 in words is "one billion, one hundred forty-two million, five hundred seventy-three thousand, six hundred eighty-one".