1142534251 has 4 divisors (see below), whose sum is σ = 1142791600. Its totient is φ = 1142276904.

The previous prime is 1142534243. The next prime is 1142534287. The reversal of 1142534251 is 1524352411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142534251 - 2³ = 1142534243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142534051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 121896 + ... + 130933.

It is an arithmetic number, because the mean of its divisors is an integer number (285697900).

Almost surely, 2^1142534251 is an apocalyptic number.

1142534251 is a deficient number, since it is larger than the sum of its proper divisors (257349).

1142534251 is an equidigital number, since it uses as much as digits as its factorization.

1142534251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257348.

The product of its digits is 4800, while the sum is 28.

The square root of 1142534251 is about 33801.3942168071. The cubic root of 1142534251 is about 1045.4174445403.

Adding to 1142534251 its reverse (1524352411), we get a palindrome (2666886662).

The spelling of 1142534251 in words is "one billion, one hundred forty-two million, five hundred thirty-four thousand, two hundred fifty-one".