1142521211 has 8 divisors (see below), whose sum is σ = 1260417984. Its totient is φ = 1028911680.

The previous prime is 1142521201. The next prime is 1142521229. The reversal of 1142521211 is 1121252411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142521211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142521201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1071251 + ... + 1072316.

It is an arithmetic number, because the mean of its divisors is an integer number (157552248).

Almost surely, 2^1142521211 is an apocalyptic number.

1142521211 is a deficient number, since it is larger than the sum of its proper divisors (117896773).

1142521211 is a wasteful number, since it uses less digits than its factorization.

1142521211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2143621.

The product of its digits is 160, while the sum is 20.

The square root of 1142521211 is about 33801.2013248050. The cubic root of 1142521211 is about 1045.4134673305.

Adding to 1142521211 its reverse (1121252411), we get a palindrome (2263773622).

The spelling of 1142521211 in words is "one billion, one hundred forty-two million, five hundred twenty-one thousand, two hundred eleven".