42117477 has 8 divisors (see below), whose sum is σ = 56288064. Its totient is φ = 28012608.

The previous prime is 42117469. The next prime is 42117527. The reversal of 42117477 is 77471124.

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

It is not a de Polignac number, because 42117477 - 2³ = 42117469 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42117377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14913 + ... + 17510.

It is an arithmetic number, because the mean of its divisors is an integer number (7036008).

Almost surely, 2^42117477 is an apocalyptic number.

It is an amenable number.

42117477 is a deficient number, since it is larger than the sum of its proper divisors (14170587).

42117477 is a wasteful number, since it uses less digits than its factorization.

42117477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32859.

The product of its digits is 10976, while the sum is 33.

The square root of 42117477 is about 6489.7979167305. The cubic root of 42117477 is about 347.9264526170.

The spelling of 42117477 in words is "forty-two million, one hundred seventeen thousand, four hundred seventy-seven".