42726317 has 8 divisors (see below), whose sum is σ = 43363320. Its totient is φ = 42094080.

The previous prime is 42726311. The next prime is 42726353. The reversal of 42726317 is 71362724.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 42588676 = 371^2 + 6526^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42726317 - 2¹² = 42722221 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 (42726311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19409 + ... + 21497.

It is an arithmetic number, because the mean of its divisors is an integer number (5420415).

Almost surely, 2^42726317 is an apocalyptic number.

It is an amenable number.

42726317 is a deficient number, since it is larger than the sum of its proper divisors (637003).

42726317 is a wasteful number, since it uses less digits than its factorization.

42726317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383.

The product of its digits is 14112, while the sum is 32.

The square root of 42726317 is about 6536.5370801365. The cubic root of 42726317 is about 349.5949518347.

The spelling of 42726317 in words is "forty-two million, seven hundred twenty-six thousand, three hundred seventeen".