1142043769 has 8 divisors (see below), whose sum is σ = 1161302408. Its totient is φ = 1122802560.

The previous prime is 1142043761. The next prime is 1142043787. The reversal of 1142043769 is 9673402411.

It can be written as a sum of positive squares in 4 ways, for example, as 249229369 + 892814400 = 15787^2 + 29880^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142043769 - 2³ = 1142043761 is a prime.

It is a super-2 number, since 2×1142043769² = 2608527940623450722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142043761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259939 + ... + 264295.

It is an arithmetic number, because the mean of its divisors is an integer number (145162801).

Almost surely, 2^1142043769 is an apocalyptic number.

It is an amenable number.

1142043769 is a deficient number, since it is larger than the sum of its proper divisors (19258639).

1142043769 is an equidigital number, since it uses as much as digits as its factorization.

1142043769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 1142043769 is about 33794.1380863605. The cubic root of 1142043769 is about 1045.2678263179.

The spelling of 1142043769 in words is "one billion, one hundred forty-two million, forty-three thousand, seven hundred sixty-nine".