10342781 has 4 divisors (see below), whose sum is σ = 10381500. Its totient is φ = 10304064.

The previous prime is 10342741. The next prime is 10342789. The reversal of 10342781 is 18724301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 319225 + 10023556 = 565^2 + 3166^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10342781 is a prime.

It is a super-2 number, since 2×10342781² = 213946237627922, 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 10342781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10342789) 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, 18956 + ... + 19493.

It is an arithmetic number, because the mean of its divisors is an integer number (2595375).

Almost surely, 2^10342781 is an apocalyptic number.

It is an amenable number.

10342781 is a deficient number, since it is larger than the sum of its proper divisors (38719).

10342781 is an equidigital number, since it uses as much as digits as its factorization.

10342781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38718.

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

The square root of 10342781 is about 3216.0194340209. The cubic root of 10342781 is about 217.8775298975.

The spelling of 10342781 in words is "ten million, three hundred forty-two thousand, seven hundred eighty-one".