64042149 has 8 divisors (see below), whose sum is σ = 85472032. Its totient is φ = 42653520.

The previous prime is 64042133. The next prime is 64042171. The reversal of 64042149 is 94124046.

64042149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 64042149 - 2⁴ = 64042133 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 (64042129) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 6487 + ... + 13044.

It is an arithmetic number, because the mean of its divisors is an integer number (10684004).

Almost surely, 2^64042149 is an apocalyptic number.

It is an amenable number.

64042149 is a deficient number, since it is larger than the sum of its proper divisors (21429883).

64042149 is a wasteful number, since it uses less digits than its factorization.

64042149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20627.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 64042149 is about 8002.6338789176. The cubic root of 64042149 is about 400.0877911470.

The spelling of 64042149 in words is "sixty-four million, forty-two thousand, one hundred forty-nine".