1142545241 has 4 divisors (see below), whose sum is σ = 1142679552. Its totient is φ = 1142410932.

The previous prime is 1142545211. The next prime is 1142545247. The reversal of 1142545241 is 1425452411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1425452411 = 6217 ⋅229283.

It is a cyclic number.

It is not a de Polignac number, because 1142545241 - 2⁶ = 1142545177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142545247) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53465 + ... + 71718.

It is an arithmetic number, because the mean of its divisors is an integer number (285669888).

Almost surely, 2^1142545241 is an apocalyptic number.

It is an amenable number.

1142545241 is a deficient number, since it is larger than the sum of its proper divisors (134311).

1142545241 is an equidigital number, since it uses as much as digits as its factorization.

1142545241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134310.

The product of its digits is 6400, while the sum is 29.

The square root of 1142545241 is about 33801.5567836749. The cubic root of 1142545241 is about 1045.4207964751.

Adding to 1142545241 its reverse (1425452411), we get a palindrome (2567997652).

The spelling of 1142545241 in words is "one billion, one hundred forty-two million, five hundred forty-five thousand, two hundred forty-one".