10742521 has 4 divisors (see below), whose sum is σ = 11374452. Its totient is φ = 10110592.

The previous prime is 10742507. The next prime is 10742539. The reversal of 10742521 is 12524701.

It is a happy number.

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 9217296 + 1525225 = 3036^2 + 1235^2 .

It is a cyclic number.

It is not a de Polignac number, because 10742521 - 2⁵ = 10742489 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10742492 and 10742501.

It is not an unprimeable number, because it can be changed into a prime (10742021) 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, 315940 + ... + 315973.

It is an arithmetic number, because the mean of its divisors is an integer number (2843613).

Almost surely, 2^10742521 is an apocalyptic number.

It is an amenable number.

10742521 is a deficient number, since it is larger than the sum of its proper divisors (631931).

10742521 is an equidigital number, since it uses as much as digits as its factorization.

10742521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631930.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 10742521 is about 3277.5785269006. The cubic root of 10742521 is about 220.6490543208.

The spelling of 10742521 in words is "ten million, seven hundred forty-two thousand, five hundred twenty-one".