1145579842 has 24 divisors (see below), whose sum is σ = 1924445628. Its totient is φ = 510887520.

The previous prime is 1145579807. The next prime is 1145579849. The reversal of 1145579842 is 2489755411.

It can be written as a sum of positive squares in 2 ways, for example, as 1139670081 + 5909761 = 33759^2 + 2431^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1145579792 and 1145579801.

It is not an unprimeable number, because it can be changed into a prime (1145579849) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31833 + ... + 57484.

Almost surely, 2^1145579842 is an apocalyptic number.

1145579842 is a deficient number, since it is larger than the sum of its proper divisors (778865786).

1145579842 is a wasteful number, since it uses less digits than its factorization.

1145579842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89394 (or 89383 counting only the distinct ones).

The product of its digits is 403200, while the sum is 46.

The square root of 1145579842 is about 33846.4154970656. The cubic root of 1145579842 is about 1046.3455243996.

Subtracting 1145579842 from its reverse (2489755411), we obtain a square (1344175569 = 36663²).

The spelling of 1145579842 in words is "one billion, one hundred forty-five million, five hundred seventy-nine thousand, eight hundred forty-two".