1142202555 has 72 divisors (see below), whose sum is σ = 2218179600. Its totient is φ = 542820096.

The previous prime is 1142202541. The next prime is 1142202557. The reversal of 1142202555 is 5552022411.

It is not a de Polignac number, because 1142202555 - 2⁴ = 1142202539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142202557) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 217956 + ... + 223134.

It is an arithmetic number, because the mean of its divisors is an integer number (30808050).

Almost surely, 2^1142202555 is an apocalyptic number.

1142202555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1142202555 is a deficient number, since it is larger than the sum of its proper divisors (1075977045).

1142202555 is a wasteful number, since it uses less digits than its factorization.

1142202555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5245 (or 5229 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1142202555 is about 33796.4873174713. The cubic root of 1142202555 is about 1045.3162676036.

Adding to 1142202555 its reverse (5552022411), we get a palindrome (6694224966).

The spelling of 1142202555 in words is "one billion, one hundred forty-two million, two hundred two thousand, five hundred fifty-five".