42121417 has 8 divisors (see below), whose sum is σ = 45460800. Its totient is φ = 38796240.

The previous prime is 42121399. The next prime is 42121459. The reversal of 42121417 is 71412124.

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 42121417 - 2¹¹ = 42119369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42121477) 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, 3084 + ... + 9682.

It is an arithmetic number, because the mean of its divisors is an integer number (5682600).

Almost surely, 2^42121417 is an apocalyptic number.

It is an amenable number.

42121417 is a deficient number, since it is larger than the sum of its proper divisors (3339383).

42121417 is a wasteful number, since it uses less digits than its factorization.

42121417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7103.

The product of its digits is 448, while the sum is 22.

The square root of 42121417 is about 6490.1014629973. The cubic root of 42121417 is about 347.9373015375.

The spelling of 42121417 in words is "forty-two million, one hundred twenty-one thousand, four hundred seventeen".