1142730665 has 8 divisors (see below), whose sum is σ = 1384854408. Its totient is φ = 905132800.

The previous prime is 1142730647. The next prime is 1142730683. The reversal of 1142730665 is 5660372411.

It is an interprime number because it is at equal distance from previous prime (1142730647) and next prime (1142730683).

It can be written as a sum of positive squares in 4 ways, for example, as 119946304 + 1022784361 = 10952^2 + 31981^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-1142730665 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1130912 + ... + 1131921.

It is an arithmetic number, because the mean of its divisors is an integer number (173106801).

Almost surely, 2^1142730665 is an apocalyptic number.

It is an amenable number.

1142730665 is a deficient number, since it is larger than the sum of its proper divisors (242123743).

1142730665 is a wasteful number, since it uses less digits than its factorization.

1142730665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2262939.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1142730665 is about 33804.2995046488. The cubic root of 1142730665 is about 1045.4773472978.

The spelling of 1142730665 in words is "one billion, one hundred forty-two million, seven hundred thirty thousand, six hundred sixty-five".