1145238542 has 16 divisors (see below), whose sum is σ = 1970259552. Its totient is φ = 489068160.

The previous prime is 1145238533. The next prime is 1145238553. The reversal of 1145238542 is 2458325411.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141623 + ... + 149490.

It is an arithmetic number, because the mean of its divisors is an integer number (123141222).

Almost surely, 2^1145238542 is an apocalyptic number.

1145238542 is a deficient number, since it is larger than the sum of its proper divisors (825021010).

1145238542 is a wasteful number, since it uses less digits than its factorization.

1145238542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291403.

The product of its digits is 38400, while the sum is 35.

The square root of 1145238542 is about 33841.3732286383. The cubic root of 1145238542 is about 1046.2416022968.

It can be divided in two parts, 11452 and 38542, that added together give a palindrome (49994).

The spelling of 1145238542 in words is "one billion, one hundred forty-five million, two hundred thirty-eight thousand, five hundred forty-two".