1142238641 has 2 divisors, whose sum is σ = 1142238642. Its totient is φ = 1142238640.

The previous prime is 1142238611. The next prime is 1142238659. The reversal of 1142238641 is 1468322411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1119237025 + 23001616 = 33455^2 + 4796^2 .

It is an emirp because it is prime and its reverse (1468322411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1142238641 - 2¹⁸ = 1141976497 is a prime.

It is a super-2 number, since 2×1142238641² = 2609418225987053762, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142238598 and 1142238607.

It is not a weakly prime, because it can be changed into another prime (1142238611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571119320 + 571119321.

It is an arithmetic number, because the mean of its divisors is an integer number (571119321).

Almost surely, 2^1142238641 is an apocalyptic number.

It is an amenable number.

1142238641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142238641 is an equidigital number, since it uses as much as digits as its factorization.

1142238641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9216, while the sum is 32.

The square root of 1142238641 is about 33797.0211853057. The cubic root of 1142238641 is about 1045.3272758337.

The spelling of 1142238641 in words is "one billion, one hundred forty-two million, two hundred thirty-eight thousand, six hundred forty-one".