1142237747 has 4 divisors (see below), whose sum is σ = 1305414576. Its totient is φ = 979060920.

The previous prime is 1142237731. The next prime is 1142237777. The reversal of 1142237747 is 7477322411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142237747 - 2⁴ = 1142237731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142237747.

It is not an unprimeable number, because it can be changed into a prime (1142237777) 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, 81588404 + ... + 81588417.

It is an arithmetic number, because the mean of its divisors is an integer number (326353644).

Almost surely, 2^1142237747 is an apocalyptic number.

1142237747 is a deficient number, since it is larger than the sum of its proper divisors (163176829).

1142237747 is an equidigital number, since it uses as much as digits as its factorization.

1142237747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163176828.

The product of its digits is 65856, while the sum is 38.

The square root of 1142237747 is about 33797.0079592854. The cubic root of 1142237747 is about 1045.3270031169.

The spelling of 1142237747 in words is "one billion, one hundred forty-two million, two hundred thirty-seven thousand, seven hundred forty-seven".