1142345547 has 24 divisors (see below), whose sum is σ = 1889897984. Its totient is φ = 651342384.

The previous prime is 1142345473. The next prime is 1142345557. The reversal of 1142345547 is 7455432411.

It is not a de Polignac number, because 1142345547 - 2⁷ = 1142345419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142345557) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9588 + ... + 48750.

Almost surely, 2^1142345547 is an apocalyptic number.

1142345547 is a deficient number, since it is larger than the sum of its proper divisors (747552437).

1142345547 is a wasteful number, since it uses less digits than its factorization.

1142345547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39639 (or 39636 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 1142345547 is about 33798.6027373914. The cubic root of 1142345547 is about 1045.3598867282.

Adding to 1142345547 its reverse (7455432411), we get a palindrome (8597777958).

The spelling of 1142345547 in words is "one billion, one hundred forty-two million, three hundred forty-five thousand, five hundred forty-seven".