1142355115 has 24 divisors (see below), whose sum is σ = 1545314544. Its totient is φ = 803966400.

The previous prime is 1142355101. The next prime is 1142355121. The reversal of 1142355115 is 5115532411.

It is not a de Polignac number, because 1142355115 - 2¹¹ = 1142353067 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42049 + ... + 63661.

It is an arithmetic number, because the mean of its divisors is an integer number (64388106).

Almost surely, 2^1142355115 is an apocalyptic number.

1142355115 is a deficient number, since it is larger than the sum of its proper divisors (402959429).

1142355115 is a wasteful number, since it uses less digits than its factorization.

1142355115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21691 (or 21660 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 1142355115 is about 33798.7442814079. The cubic root of 1142355115 is about 1045.3628052775.

Adding to 1142355115 its reverse (5115532411), we get a palindrome (6257887526).

The spelling of 1142355115 in words is "one billion, one hundred forty-two million, three hundred fifty-five thousand, one hundred fifteen".