20742214 has 4 divisors (see below), whose sum is σ = 31113324. Its totient is φ = 10371106.

The previous prime is 20742209. The next prime is 20742223. The reversal of 20742214 is 41224702.

It is a happy number.

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

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5185552 + ... + 5185555.

It is an arithmetic number, because the mean of its divisors is an integer number (7778331).

Almost surely, 2^20742214 is an apocalyptic number.

20742214 is a deficient number, since it is larger than the sum of its proper divisors (10371110).

20742214 is a wasteful number, since it uses less digits than its factorization.

20742214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10371109.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 20742214 is about 4554.3620848589. The cubic root of 20742214 is about 274.7588585827.

Adding to 20742214 its reverse (41224702), we get a palindrome (61966916).

The spelling of 20742214 in words is "twenty million, seven hundred forty-two thousand, two hundred fourteen".