42386691 has 8 divisors (see below), whose sum is σ = 57830080. Its totient is φ = 27600552.

The previous prime is 42386681. The next prime is 42386693. The reversal of 42386691 is 19668324.

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

It is not a de Polignac number, because 42386691 - 2¹³ = 42378499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42386693) 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, 164161 + ... + 164418.

It is an arithmetic number, because the mean of its divisors is an integer number (7228760).

Almost surely, 2^42386691 is an apocalyptic number.

42386691 is a deficient number, since it is larger than the sum of its proper divisors (15443389).

42386691 is a wasteful number, since it uses less digits than its factorization.

42386691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328625.

The product of its digits is 62208, while the sum is 39.

The square root of 42386691 is about 6510.5062015177. The cubic root of 42386691 is about 348.6661914980. Note that the first 3 decimals are identical.

The spelling of 42386691 in words is "forty-two million, three hundred eighty-six thousand, six hundred ninety-one".