27405242 has 4 divisors (see below), whose sum is σ = 41107866. Its totient is φ = 13702620.

The previous prime is 27405229. The next prime is 27405251. The reversal of 27405242 is 24250472.

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

It can be written as a sum of positive squares in only one way, i.e., 27237961 + 167281 = 5219^2 + 409^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6851309 + ... + 6851312.

Almost surely, 2^27405242 is an apocalyptic number.

27405242 is a deficient number, since it is larger than the sum of its proper divisors (13702624).

27405242 is a wasteful number, since it uses less digits than its factorization.

27405242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13702623.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 27405242 is about 5235.0016236865. The cubic root of 27405242 is about 301.4934493231.

The spelling of 27405242 in words is "twenty-seven million, four hundred five thousand, two hundred forty-two".