1142546491 has 2 divisors, whose sum is σ = 1142546492. Its totient is φ = 1142546490.

The previous prime is 1142546473. The next prime is 1142546519. The reversal of 1142546491 is 1946452411.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142546491 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142546491.

It is not a weakly prime, because it can be changed into another prime (1142546411) 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, 571273245 + 571273246.

It is an arithmetic number, because the mean of its divisors is an integer number (571273246).

Almost surely, 2^1142546491 is an apocalyptic number.

1142546491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1142546491 is an equidigital number, since it uses as much as digits as its factorization.

1142546491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 37.

The square root of 1142546491 is about 33801.5752739425. The cubic root of 1142546491 is about 1045.4211777220.

The spelling of 1142546491 in words is "one billion, one hundred forty-two million, five hundred forty-six thousand, four hundred ninety-one".