1142540216 has 64 divisors (see below), whose sum is σ = 2350529280. Its totient is φ = 518307840.

The previous prime is 1142540209. The next prime is 1142540219. The reversal of 1142540216 is 6120452411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142540219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1926416 + ... + 1927008.

It is an arithmetic number, because the mean of its divisors is an integer number (36727020).

Almost surely, 2^1142540216 is an apocalyptic number.

It is an amenable number.

1142540216 is an abundant number, since it is smaller than the sum of its proper divisors (1207989064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142540216 is a wasteful number, since it uses less digits than its factorization.

1142540216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104 (or 1100 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1142540216 is about 33801.4824526972. The cubic root of 1142540216 is about 1045.4192638597.

Adding to 1142540216 its reverse (6120452411), we get a palindrome (7262992627).

The spelling of 1142540216 in words is "one billion, one hundred forty-two million, five hundred forty thousand, two hundred sixteen".