27420142 has 4 divisors (see below), whose sum is σ = 41130216. Its totient is φ = 13710070.

The previous prime is 27420131. The next prime is 27420143. The reversal of 27420142 is 24102472.

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 not an unprimeable number, because it can be changed into a prime (27420143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6855034 + ... + 6855037.

It is an arithmetic number, because the mean of its divisors is an integer number (10282554).

Almost surely, 2^27420142 is an apocalyptic number.

27420142 is a deficient number, since it is larger than the sum of its proper divisors (13710074).

27420142 is a wasteful number, since it uses less digits than its factorization.

27420142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710073.

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

The square root of 27420142 is about 5236.4245435220. The cubic root of 27420142 is about 301.5480792428.

The spelling of 27420142 in words is "twenty-seven million, four hundred twenty thousand, one hundred forty-two".