42415191 has 64 divisors (see below), whose sum is σ = 78883840. Its totient is φ = 21928320.

The previous prime is 42415181. The next prime is 42415193. The reversal of 42415191 is 19151424.

42415191 is a `hidden beast` number, since 424 + 151 + 91 = 666.

42415191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-42415191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42415193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149736 + ... + 150018.

It is an arithmetic number, because the mean of its divisors is an integer number (1232560).

Almost surely, 2^42415191 is an apocalyptic number.

42415191 is a deficient number, since it is larger than the sum of its proper divisors (36468649).

42415191 is a wasteful number, since it uses less digits than its factorization.

42415191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 367 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 42415191 is about 6512.6946036184. The cubic root of 42415191 is about 348.7443194820.

The spelling of 42415191 in words is "forty-two million, four hundred fifteen thousand, one hundred ninety-one".