1142531215 has 16 divisors (see below), whose sum is σ = 1605119040. Its totient is φ = 764340480.

The previous prime is 1142531171. The next prime is 1142531227. The reversal of 1142531215 is 5121352411.

It is not a de Polignac number, because 1142531215 - 2⁹ = 1142530703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1142531215.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 396660 + ... + 399529.

It is an arithmetic number, because the mean of its divisors is an integer number (100319940).

Almost surely, 2^1142531215 is an apocalyptic number.

1142531215 is a deficient number, since it is larger than the sum of its proper divisors (462587825).

1142531215 is an equidigital number, since it uses as much as digits as its factorization.

1142531215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 796242.

The product of its digits is 1200, while the sum is 25.

The square root of 1142531215 is about 33801.3493073871. The cubic root of 1142531215 is about 1045.4165185607.

Adding to 1142531215 its reverse (5121352411), we get a palindrome (6263883626).

The spelling of 1142531215 in words is "one billion, one hundred forty-two million, five hundred thirty-one thousand, two hundred fifteen".