42117449 has 8 divisors (see below), whose sum is σ = 48649248. Its totient is φ = 36036160.

The previous prime is 42117409. The next prime is 42117469. The reversal of 42117449 is 94471124.

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 42117449 - 2²⁰ = 41068873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42117409) 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, 112427 + ... + 112800.

It is an arithmetic number, because the mean of its divisors is an integer number (6081156).

Almost surely, 2^42117449 is an apocalyptic number.

It is an amenable number.

42117449 is a deficient number, since it is larger than the sum of its proper divisors (6531799).

42117449 is a wasteful number, since it uses less digits than its factorization.

42117449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225255.

The product of its digits is 8064, while the sum is 32.

The square root of 42117449 is about 6489.7957594981. The cubic root of 42117449 is about 347.9263755156.

The spelling of 42117449 in words is "forty-two million, one hundred seventeen thousand, four hundred forty-nine".