11345421 has 16 divisors (see below), whose sum is σ = 15904064. Its totient is φ = 7185024.

The previous prime is 11345419. The next prime is 11345423. The reversal of 11345421 is 12454311.

11345421 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11345419) and next prime (11345423).

It is not a de Polignac number, because 11345421 - 2¹ = 11345419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11345423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3585 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (994004).

Almost surely, 2^11345421 is an apocalyptic number.

It is an amenable number.

11345421 is a deficient number, since it is larger than the sum of its proper divisors (4558643).

11345421 is a wasteful number, since it uses less digits than its factorization.

11345421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2460.

The product of its digits is 480, while the sum is 21.

The square root of 11345421 is about 3368.2964536988. The cubic root of 11345421 is about 224.7019658933.

Adding to 11345421 its reverse (12454311), we get a palindrome (23799732).

It can be divided in two parts, 1134 and 5421, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 11345421 in words is "eleven million, three hundred forty-five thousand, four hundred twenty-one".