11842521 has 4 divisors (see below), whose sum is σ = 15790032. Its totient is φ = 7895012.

The previous prime is 11842507. The next prime is 11842559. The reversal of 11842521 is 12524811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11842521 - 2⁷ = 11842393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11842491 and 11842500.

It is not an unprimeable number, because it can be changed into a prime (11842561) 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, 1973751 + ... + 1973756.

It is an arithmetic number, because the mean of its divisors is an integer number (3947508).

Almost surely, 2^11842521 is an apocalyptic number.

It is an amenable number.

11842521 is a deficient number, since it is larger than the sum of its proper divisors (3947511).

11842521 is an equidigital number, since it uses as much as digits as its factorization.

11842521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947510.

The product of its digits is 640, while the sum is 24.

The square root of 11842521 is about 3441.2964126910. The cubic root of 11842521 is about 227.9369439354.

The spelling of 11842521 in words is "eleven million, eight hundred forty-two thousand, five hundred twenty-one".