1142531141 has 4 divisors (see below), whose sum is σ = 1192206432. Its totient is φ = 1092855852.

The previous prime is 1142531057. The next prime is 1142531171. The reversal of 1142531141 is 1411352411.

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.

It is a cyclic number.

It is not a de Polignac number, because 1142531141 - 2¹⁴ = 1142514757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 49675267 = 1142531141 / (1 + 1 + 4 + 2 + 5 + 3 + 1 + 1 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142531171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24837611 + ... + 24837656.

It is an arithmetic number, because the mean of its divisors is an integer number (298051608).

Almost surely, 2^1142531141 is an apocalyptic number.

It is an amenable number.

1142531141 is a deficient number, since it is larger than the sum of its proper divisors (49675291).

1142531141 is an equidigital number, since it uses as much as digits as its factorization.

1142531141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49675290.

The product of its digits is 480, while the sum is 23.

The square root of 1142531141 is about 33801.3482127562. The cubic root of 1142531141 is about 1045.4164959907.

Adding to 1142531141 its reverse (1411352411), we get a palindrome (2553883552).

The spelling of 1142531141 in words is "one billion, one hundred forty-two million, five hundred thirty-one thousand, one hundred forty-one".