42735117 has 4 divisors (see below), whose sum is σ = 56980160. Its totient is φ = 28490076.

The previous prime is 42735107. The next prime is 42735139. The reversal of 42735117 is 71153724.

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 42735117 - 2⁴ = 42735101 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 (42735107) 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, 7122517 + ... + 7122522.

It is an arithmetic number, because the mean of its divisors is an integer number (14245040).

Almost surely, 2^42735117 is an apocalyptic number.

It is an amenable number.

42735117 is a deficient number, since it is larger than the sum of its proper divisors (14245043).

42735117 is a wasteful number, since it uses less digits than its factorization.

42735117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14245042.

The product of its digits is 5880, while the sum is 30.

The square root of 42735117 is about 6537.2101847807. The cubic root of 42735117 is about 349.6189512852.

The spelling of 42735117 in words is "forty-two million, seven hundred thirty-five thousand, one hundred seventeen".