42101517 has 4 divisors (see below), whose sum is σ = 56135360. Its totient is φ = 28067676.

The previous prime is 42101513. The next prime is 42101531. The reversal of 42101517 is 71510124.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42101517 - 2² = 42101513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42101493 and 42101502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42101513) 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 3 ways as a sum of consecutive naturals, for example, 7016917 + ... + 7016922.

It is an arithmetic number, because the mean of its divisors is an integer number (14033840).

Almost surely, 2^42101517 is an apocalyptic number.

It is an amenable number.

42101517 is a deficient number, since it is larger than the sum of its proper divisors (14033843).

42101517 is a wasteful number, since it uses less digits than its factorization.

42101517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14033842.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 42101517 is about 6488.5681779573. The cubic root of 42101517 is about 347.8824993056.

The spelling of 42101517 in words is "forty-two million, one hundred one thousand, five hundred seventeen".