1142519459 has 4 divisors (see below), whose sum is σ = 1209726504. Its totient is φ = 1075312416.

The previous prime is 1142519453. The next prime is 1142519471. The reversal of 1142519459 is 9549152411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142519459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142519453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33603497 + ... + 33603530.

It is an arithmetic number, because the mean of its divisors is an integer number (302431626).

Almost surely, 2^1142519459 is an apocalyptic number.

1142519459 is a deficient number, since it is larger than the sum of its proper divisors (67207045).

1142519459 is an equidigital number, since it uses as much as digits as its factorization.

1142519459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67207044.

The product of its digits is 64800, while the sum is 41.

The square root of 1142519459 is about 33801.1754085564. The cubic root of 1142519459 is about 1045.4129329668.

The spelling of 1142519459 in words is "one billion, one hundred forty-two million, five hundred nineteen thousand, four hundred fifty-nine".