42671015 has 4 divisors (see below), whose sum is σ = 51205224. Its totient is φ = 34136808.

The previous prime is 42671011. The next prime is 42671021. The reversal of 42671015 is 51017624.

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 42671015 - 2² = 42671011 is a prime.

It is a super-2 number, since 2×42671015² = 3641631042260450, 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 (42671011) 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, 4267097 + ... + 4267106.

It is an arithmetic number, because the mean of its divisors is an integer number (12801306).

Almost surely, 2^42671015 is an apocalyptic number.

42671015 is a deficient number, since it is larger than the sum of its proper divisors (8534209).

42671015 is an equidigital number, since it uses as much as digits as its factorization.

42671015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8534208.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 42671015 is about 6532.3054888760. The cubic root of 42671015 is about 349.4440561758. Note that the first 3 decimals are identical.

Adding to 42671015 its reverse (51017624), we get a palindrome (93688639).

The spelling of 42671015 in words is "forty-two million, six hundred seventy-one thousand, fifteen".