42417949 has 4 divisors (see below), whose sum is σ = 48477664. Its totient is φ = 36358236.

The previous prime is 42417943. The next prime is 42417953. The reversal of 42417949 is 94971424.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42417949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42417943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3029847 + ... + 3029860.

It is an arithmetic number, because the mean of its divisors is an integer number (12119416).

Almost surely, 2^42417949 is an apocalyptic number.

It is an amenable number.

42417949 is a deficient number, since it is larger than the sum of its proper divisors (6059715).

42417949 is an equidigital number, since it uses as much as digits as its factorization.

42417949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6059714.

The product of its digits is 72576, while the sum is 40.

The square root of 42417949 is about 6512.9063404904. The cubic root of 42417949 is about 348.7518782203.

The spelling of 42417949 in words is "forty-two million, four hundred seventeen thousand, nine hundred forty-nine".