11129421 has 8 divisors (see below), whose sum is σ = 15620320. Its totient is φ = 7029072.

The previous prime is 11129357. The next prime is 11129423. The reversal of 11129421 is 12492111.

It is a happy number.

11129421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11129421 - 2⁶ = 11129357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11129423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97570 + ... + 97683.

It is an arithmetic number, because the mean of its divisors is an integer number (1952540).

Almost surely, 2^11129421 is an apocalyptic number.

It is an amenable number.

11129421 is a deficient number, since it is larger than the sum of its proper divisors (4490899).

11129421 is a wasteful number, since it uses less digits than its factorization.

11129421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195275.

The product of its digits is 144, while the sum is 21.

The square root of 11129421 is about 3336.0786861224. The cubic root of 11129421 is about 223.2668218563.

The spelling of 11129421 in words is "eleven million, one hundred twenty-nine thousand, four hundred twenty-one".