1142678611 has 4 divisors (see below), whose sum is σ = 1146578832. Its totient is φ = 1138778392.

The previous prime is 1142678609. The next prime is 1142678623. The reversal of 1142678611 is 1168762411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1168762411 = 23 ⋅50815757.

It is a cyclic number.

It is not a de Polignac number, because 1142678611 - 2¹ = 1142678609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142678671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1949671 + ... + 1950256.

It is an arithmetic number, because the mean of its divisors is an integer number (286644708).

Almost surely, 2^1142678611 is an apocalyptic number.

1142678611 is a deficient number, since it is larger than the sum of its proper divisors (3900221).

1142678611 is an equidigital number, since it uses as much as digits as its factorization.

1142678611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3900220.

The product of its digits is 16128, while the sum is 37.

The square root of 1142678611 is about 33803.5295642334. The cubic root of 1142678611 is about 1045.4614724273.

The spelling of 1142678611 in words is "one billion, one hundred forty-two million, six hundred seventy-eight thousand, six hundred eleven".