42117417 has 24 divisors (see below), whose sum is σ = 61981920. Its totient is φ = 27555840.

The previous prime is 42117409. The next prime is 42117469. The reversal of 42117417 is 71471124.

It is not a de Polignac number, because 42117417 - 2³ = 42117409 is a prime.

It is a super-3 number, since 3×42117417³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (42117017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163753 + ... + 164009.

It is an arithmetic number, because the mean of its divisors is an integer number (2582580).

Almost surely, 2^42117417 is an apocalyptic number.

It is an amenable number.

42117417 is a deficient number, since it is larger than the sum of its proper divisors (19864503).

42117417 is a wasteful number, since it uses less digits than its factorization.

42117417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 530 counting only the distinct ones).

The product of its digits is 1568, while the sum is 27.

The square root of 42117417 is about 6489.7932940888. The cubic root of 42117417 is about 347.9262873997.

It can be divided in two parts, 4211 and 7417, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 42117417 in words is "forty-two million, one hundred seventeen thousand, four hundred seventeen".