1142505457 has 2 divisors, whose sum is σ = 1142505458. Its totient is φ = 1142505456.

The previous prime is 1142505437. The next prime is 1142505491. The reversal of 1142505457 is 7545052411.

It is an a-pointer prime, because the next prime (1142505491) can be obtained adding 1142505457 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674388961 + 468116496 = 25969^2 + 21636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142505457 - 2¹¹ = 1142503409 is a prime.

It is not a weakly prime, because it can be changed into another prime (1142505437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571252728 + 571252729.

It is an arithmetic number, because the mean of its divisors is an integer number (571252729).

Almost surely, 2^1142505457 is an apocalyptic number.

It is an amenable number.

1142505457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142505457 is an equidigital number, since it uses as much as digits as its factorization.

1142505457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28000, while the sum is 34.

The square root of 1142505457 is about 33800.9682849471. The cubic root of 1142505457 is about 1045.4086623082.

Adding to 1142505457 its reverse (7545052411), we get a palindrome (8687557868).

The spelling of 1142505457 in words is "one billion, one hundred forty-two million, five hundred five thousand, four hundred fifty-seven".