1142187135 has 16 divisors (see below), whose sum is σ = 1850634240. Its totient is φ = 601454880.

The previous prime is 1142187133. The next prime is 1142187169. The reversal of 1142187135 is 5317812411.

It is not a de Polignac number, because 1142187135 - 2¹ = 1142187133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142187096 and 1142187105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142187133) 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, 480751 + ... + 483120.

It is an arithmetic number, because the mean of its divisors is an integer number (115664640).

Almost surely, 2^1142187135 is an apocalyptic number.

1142187135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1142187135 is a deficient number, since it is larger than the sum of its proper divisors (708447105).

1142187135 is an equidigital number, since it uses as much as digits as its factorization.

1142187135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 963958.

The product of its digits is 6720, while the sum is 33.

The square root of 1142187135 is about 33796.2591864839. The cubic root of 1142187135 is about 1045.3115635782.

Adding to 1142187135 its reverse (5317812411), we get a palindrome (6459999546).

The spelling of 1142187135 in words is "one billion, one hundred forty-two million, one hundred eighty-seven thousand, one hundred thirty-five".