13742081 has 4 divisors (see below), whose sum is σ = 13751892. Its totient is φ = 13732272.

The previous prime is 13742051. The next prime is 13742089. The reversal of 13742081 is 18024731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18024731 = 313 ⋅57587.

It can be written as a sum of positive squares in 2 ways, for example, as 9247681 + 4494400 = 3041^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 13742081 - 2²² = 9547777 is a prime.

It is a super-2 number, since 2×13742081² = 377689580421122, which contains 22 as substring.

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 13742081.

It is not an unprimeable number, because it can be changed into a prime (13742089) 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, 2366 + ... + 5751.

It is an arithmetic number, because the mean of its divisors is an integer number (3437973).

It is a Proth number, since it is equal to 3355 ⋅ 2¹² + 1 and 3355 < 2¹².

Almost surely, 2^13742081 is an apocalyptic number.

It is an amenable number.

13742081 is a deficient number, since it is larger than the sum of its proper divisors (9811).

13742081 is an equidigital number, since it uses as much as digits as its factorization.

13742081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9810.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 13742081 is about 3707.0312920179. The cubic root of 13742081 is about 239.5249921982.

The spelling of 13742081 in words is "thirteen million, seven hundred forty-two thousand, eighty-one".