27121642 has 8 divisors (see below), whose sum is σ = 40748832. Its totient is φ = 13538700.

The previous prime is 27121639. The next prime is 27121649. The reversal of 27121642 is 24612172.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (27121649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9484 + ... + 12007.

It is an arithmetic number, because the mean of its divisors is an integer number (5093604).

Almost surely, 2^27121642 is an apocalyptic number.

27121642 is a deficient number, since it is larger than the sum of its proper divisors (13627190).

27121642 is a wasteful number, since it uses less digits than its factorization.

27121642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22124.

The product of its digits is 1344, while the sum is 25.

The square root of 27121642 is about 5207.8442757056. The cubic root of 27121642 is about 300.4498510356.

The spelling of 27121642 in words is "twenty-seven million, one hundred twenty-one thousand, six hundred forty-two".