27042149 has 12 divisors (see below), whose sum is σ = 28771596. Its totient is φ = 25411968.

The previous prime is 27042139. The next prime is 27042161. The reversal of 27042149 is 94124072.

It can be written as a sum of positive squares in 2 ways, for example, as 14010049 + 13032100 = 3743^2 + 3610^2 .

It is not a de Polignac number, because 27042149 - 2⁸ = 27041893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27042109) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62237 + ... + 62669.

It is an arithmetic number, because the mean of its divisors is an integer number (2397633).

Almost surely, 2^27042149 is an apocalyptic number.

It is an amenable number.

27042149 is a deficient number, since it is larger than the sum of its proper divisors (1729447).

27042149 is a wasteful number, since it uses less digits than its factorization.

27042149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 27042149 is about 5200.2066305100. The cubic root of 27042149 is about 300.1560262460.

The spelling of 27042149 in words is "twenty-seven million, forty-two thousand, one hundred forty-nine".