42117649 has 8 divisors (see below), whose sum is σ = 48173760. Its totient is φ = 36071376.

The previous prime is 42117643. The next prime is 42117659. The reversal of 42117649 is 94671124.

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 42117649 - 2⁵ = 42117617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42117643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15042 + ... + 17620.

It is an arithmetic number, because the mean of its divisors is an integer number (6021720).

Almost surely, 2^42117649 is an apocalyptic number.

It is an amenable number.

42117649 is a deficient number, since it is larger than the sum of its proper divisors (6056111).

42117649 is a wasteful number, since it uses less digits than its factorization.

42117649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919.

The product of its digits is 12096, while the sum is 34.

The square root of 42117649 is about 6489.8111682853. The cubic root of 42117649 is about 347.9269262388.

The spelling of 42117649 in words is "forty-two million, one hundred seventeen thousand, six hundred forty-nine".