1214191 has 16 divisors (see below), whose sum is σ = 1444608. Its totient is φ = 1008000.

The previous prime is 1214189. The next prime is 1214197. The reversal of 1214191 is 1914121.

It is a cyclic number.

It is not a de Polignac number, because 1214191 - 2¹ = 1214189 is a prime.

1214191 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1214197) 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, 7966 + ... + 8116.

It is an arithmetic number, because the mean of its divisors is an integer number (90288).

2^1214191 is an apocalyptic number.

1214191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1214191 is a deficient number, since it is larger than the sum of its proper divisors (230417).

1214191 is a wasteful number, since it uses less digits than its factorization.

1214191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222.

The product of its digits is 72, while the sum is 19.

The square root of 1214191 is about 1101.9033532937. The cubic root of 1214191 is about 106.6831105291.

The spelling of 1214191 in words is "one million, two hundred fourteen thousand, one hundred ninety-one".