11421854 has 4 divisors (see below), whose sum is σ = 17132784. Its totient is φ = 5710926.

The previous prime is 11421803. The next prime is 11421859. The reversal of 11421854 is 45812411.

11421854 is digitally balanced in base 2, because in such base 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: 45812411 = 3533 ⋅12967.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11421859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855462 + ... + 2855465.

It is an arithmetic number, because the mean of its divisors is an integer number (4283196).

Almost surely, 2^11421854 is an apocalyptic number.

11421854 is a deficient number, since it is larger than the sum of its proper divisors (5710930).

11421854 is an equidigital number, since it uses as much as digits as its factorization.

11421854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710929.

The product of its digits is 1280, while the sum is 26.

The square root of 11421854 is about 3379.6233517953. The cubic root of 11421854 is about 225.2054354161.

The spelling of 11421854 in words is "eleven million, four hundred twenty-one thousand, eight hundred fifty-four".