1199421 has 16 divisors (see below), whose sum is σ = 1835520. Its totient is φ = 773280.

The previous prime is 1199417. The next prime is 1199423. The reversal of 1199421 is 1249911.

It is not a de Polignac number, because 1199421 - 2² = 1199417 is a prime.

It is a super-2 number, since 2×1199421² = 2877221470482, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1199423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (114720).

2^1199421 is an apocalyptic number.

It is an amenable number.

1199421 is a deficient number, since it is larger than the sum of its proper divisors (636099).

1199421 is a wasteful number, since it uses less digits than its factorization.

1199421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473 (or 1467 counting only the distinct ones).

The product of its digits is 648, while the sum is 27.

The square root of 1199421 is about 1095.1808069903. The cubic root of 1199421 is about 106.2487630767.

The spelling of 1199421 in words is "one million, one hundred ninety-nine thousand, four hundred twenty-one".