1142096491 has 4 divisors (see below), whose sum is σ = 1142204800. Its totient is φ = 1141988184.

The previous prime is 1142096489. The next prime is 1142096497. The reversal of 1142096491 is 1946902411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1946902411 = 8597 ⋅226463.

It is a cyclic number.

It is not a de Polignac number, because 1142096491 - 2¹ = 1142096489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142096491.

It is not an unprimeable number, because it can be changed into a prime (1142096497) 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 in 3 ways as a sum of consecutive naturals, for example, 36396 + ... + 60073.

It is an arithmetic number, because the mean of its divisors is an integer number (285551200).

Almost surely, 2^1142096491 is an apocalyptic number.

1142096491 is a deficient number, since it is larger than the sum of its proper divisors (108309).

1142096491 is an equidigital number, since it uses as much as digits as its factorization.

1142096491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108308.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1142096491 is about 33794.9181238837. The cubic root of 1142096491 is about 1045.2839108626.

The spelling of 1142096491 in words is "one billion, one hundred forty-two million, ninety-six thousand, four hundred ninety-one".