1136421 has 24 divisors (see below), whose sum is σ = 1930656. Its totient is φ = 635040.

The previous prime is 1136417. The next prime is 1136449. The reversal of 1136421 is 1246311.

It is a happy number.

It is not a de Polignac number, because 1136421 - 2² = 1136417 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1136394 and 1136403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1136411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 846 + ... + 1728.

It is an arithmetic number, because the mean of its divisors is an integer number (80444).

2^1136421 is an apocalyptic number.

1136421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1136421 is a deficient number, since it is larger than the sum of its proper divisors (794235).

1136421 is a wasteful number, since it uses less digits than its factorization.

1136421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 910 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1136421 is about 1066.0304873689. The cubic root of 1136421 is about 104.3549570081.

The spelling of 1136421 in words is "one million, one hundred thirty-six thousand, four hundred twenty-one".