13142765 has 4 divisors (see below), whose sum is σ = 15771324. Its totient is φ = 10514208.

The previous prime is 13142761. The next prime is 13142777. The reversal of 13142765 is 56724131.

13142765 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56724131 = 2957 ⋅19183.

It can be written as a sum of positive squares in 2 ways, for example, as 7086244 + 6056521 = 2662^2 + 2461^2 .

It is a cyclic number.

It is not a de Polignac number, because 13142765 - 2² = 13142761 is a prime.

It is a super-3 number, since 3×13142765³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13142761) 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, 1314272 + ... + 1314281.

It is an arithmetic number, because the mean of its divisors is an integer number (3942831).

Almost surely, 2^13142765 is an apocalyptic number.

It is an amenable number.

13142765 is a deficient number, since it is larger than the sum of its proper divisors (2628559).

13142765 is an equidigital number, since it uses as much as digits as its factorization.

13142765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628558.

The product of its digits is 5040, while the sum is 29.

The square root of 13142765 is about 3625.2951603973. The cubic root of 13142765 is about 235.9910762210.

Adding to 13142765 its reverse (56724131), we get a palindrome (69866896).

The spelling of 13142765 in words is "thirteen million, one hundred forty-two thousand, seven hundred sixty-five".