1142111178 has 56 divisors (see below), whose sum is σ = 2766203748. Its totient is φ = 351412992.

The previous prime is 1142111167. The next prime is 1142111209. The reversal of 1142111178 is 8711112411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1140885729 + 1225449 = 33777^2 + 1107^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 11175 + ... + 49082.

Almost surely, 2^1142111178 is an apocalyptic number.

1142111178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1142111178 is an abundant number, since it is smaller than the sum of its proper divisors (1624092570).

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

1142111178 is an equidigital number, since it uses as much as digits as its factorization.

1142111178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60290 (or 60275 counting only the distinct ones).

The product of its digits is 448, while the sum is 27.

The square root of 1142111178 is about 33795.1354191694. The cubic root of 1142111178 is about 1045.2883915170.

Adding to 1142111178 its reverse (8711112411), we get a palindrome (9853223589).

The spelling of 1142111178 in words is "one billion, one hundred forty-two million, one hundred eleven thousand, one hundred seventy-eight".