1065142723 has 4 divisors (see below), whose sum is σ = 1089913528. Its totient is φ = 1040371920.

The previous prime is 1065142721. The next prime is 1065142739. The reversal of 1065142723 is 3272415601.

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 1065142723 - 2¹ = 1065142721 is a prime.

It is a super-2 number, since 2×1065142723² = 2269058040719709458, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1065142721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12385338 + ... + 12385423.

It is an arithmetic number, because the mean of its divisors is an integer number (272478382).

Almost surely, 2^1065142723 is an apocalyptic number.

1065142723 is a deficient number, since it is larger than the sum of its proper divisors (24770805).

1065142723 is an equidigital number, since it uses as much as digits as its factorization.

1065142723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24770804.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1065142723 is about 32636.5243707108. The cubic root of 1065142723 is about 1021.2590894422.

The spelling of 1065142723 in words is "one billion, sixty-five million, one hundred forty-two thousand, seven hundred twenty-three".