1142104391 has 2 divisors, whose sum is σ = 1142104392. Its totient is φ = 1142104390.

The previous prime is 1142104373. The next prime is 1142104429. The reversal of 1142104391 is 1934012411.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1934012411) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142104391 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142104391.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1142104351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 571052195 + 571052196.

It is an arithmetic number, because the mean of its divisors is an integer number (571052196).

Almost surely, 2^1142104391 is an apocalyptic number.

1142104391 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142104391 is an equidigital number, since it uses as much as digits as its factorization.

1142104391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1142104391 is about 33795.0350051602. The cubic root of 1142104391 is about 1045.2863209695.

The spelling of 1142104391 in words is "one billion, one hundred forty-two million, one hundred four thousand, three hundred ninety-one".