1142573647 has 4 divisors (see below), whose sum is σ = 1148956920. Its totient is φ = 1136190376.

The previous prime is 1142573633. The next prime is 1142573681. The reversal of 1142573647 is 7463752411.

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-1142573647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142573687) 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 in 3 ways as a sum of consecutive naturals, for example, 3191368 + ... + 3191725.

It is an arithmetic number, because the mean of its divisors is an integer number (287239230).

Almost surely, 2^1142573647 is an apocalyptic number.

1142573647 is a deficient number, since it is larger than the sum of its proper divisors (6383273).

1142573647 is an equidigital number, since it uses as much as digits as its factorization.

1142573647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6383272.

The product of its digits is 141120, while the sum is 40.

The square root of 1142573647 is about 33801.9769688106. The cubic root of 1142573647 is about 1045.4294601662.

The spelling of 1142573647 in words is "one billion, one hundred forty-two million, five hundred seventy-three thousand, six hundred forty-seven".