42775491 has 8 divisors (see below), whose sum is σ = 62218944. Its totient is φ = 25924520.

The previous prime is 42775487. The next prime is 42775507. The reversal of 42775491 is 19457724.

42775491 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 a cyclic number.

It is not a de Polignac number, because 42775491 - 2² = 42775487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42775471) 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, 648081 + ... + 648146.

It is an arithmetic number, because the mean of its divisors is an integer number (7777368).

Almost surely, 2^42775491 is an apocalyptic number.

42775491 is a deficient number, since it is larger than the sum of its proper divisors (19443453).

42775491 is a wasteful number, since it uses less digits than its factorization.

42775491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1296241.

The product of its digits is 70560, while the sum is 39.

The square root of 42775491 is about 6540.2974702990. The cubic root of 42775491 is about 349.7290174606.

The spelling of 42775491 in words is "forty-two million, seven hundred seventy-five thousand, four hundred ninety-one".