1145542442 has 16 divisors (see below), whose sum is σ = 1934993664. Its totient is φ = 503904000.

The previous prime is 1145542441. The next prime is 1145542457. The reversal of 1145542442 is 2442455411.

It is a junction number, because it is equal to n+sod(n) for n = 1145542399 and 1145542408.

It is not an unprimeable number, because it can be changed into a prime (1145542441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 839159 + ... + 840522.

It is an arithmetic number, because the mean of its divisors is an integer number (120937104).

Almost surely, 2^1145542442 is an apocalyptic number.

1145542442 is a deficient number, since it is larger than the sum of its proper divisors (789451222).

1145542442 is a wasteful number, since it uses less digits than its factorization.

1145542442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679725.

The product of its digits is 25600, while the sum is 32.

The square root of 1145542442 is about 33845.8629968272. The cubic root of 1145542442 is about 1046.3341375173.

Adding to 1145542442 its reverse (2442455411), we get a palindrome (3587997853).

The spelling of 1145542442 in words is "one billion, one hundred forty-five million, five hundred forty-two thousand, four hundred forty-two".