214242491 has 4 divisors (see below), whose sum is σ = 216649800. Its totient is φ = 211835184.

The previous prime is 214242487. The next prime is 214242521. The reversal of 214242491 is 194242412.

214242491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 214242491 - 2² = 214242487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214242421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203521 + ... + 1203698.

It is an arithmetic number, because the mean of its divisors is an integer number (54162450).

Almost surely, 2^214242491 is an apocalyptic number.

214242491 is a deficient number, since it is larger than the sum of its proper divisors (2407309).

214242491 is an equidigital number, since it uses as much as digits as its factorization.

214242491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407308.

The product of its digits is 4608, while the sum is 29.

The square root of 214242491 is about 14637.0246635032. The cubic root of 214242491 is about 598.3682431575.

The spelling of 214242491 in words is "two hundred fourteen million, two hundred forty-two thousand, four hundred ninety-one".