42645767 has 4 divisors (see below), whose sum is σ = 42762336. Its totient is φ = 42529200.

The previous prime is 42645763. The next prime is 42645769. The reversal of 42645767 is 76754624.

42645767 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42645767 - 2² = 42645763 is a prime.

It is a super-2 number, since 2×42645767² = 3637322886036578, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42645763) 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, 57734 + ... + 58467.

It is an arithmetic number, because the mean of its divisors is an integer number (10690584).

Almost surely, 2^42645767 is an apocalyptic number.

42645767 is a deficient number, since it is larger than the sum of its proper divisors (116569).

42645767 is a wasteful number, since it uses less digits than its factorization.

42645767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116568.

The product of its digits is 282240, while the sum is 41.

The square root of 42645767 is about 6530.3726539915. The cubic root of 42645767 is about 349.3751217620.

The spelling of 42645767 in words is "forty-two million, six hundred forty-five thousand, seven hundred sixty-seven".