42661015 has 8 divisors (see below), whose sum is σ = 51424128. Its totient is φ = 33974880.

The previous prime is 42660983. The next prime is 42661039. The reversal of 42661015 is 51016624.

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

It is not a de Polignac number, because 42661015 - 2⁵ = 42660983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18016 + ... + 20245.

It is an arithmetic number, because the mean of its divisors is an integer number (6428016).

Almost surely, 2^42661015 is an apocalyptic number.

42661015 is a deficient number, since it is larger than the sum of its proper divisors (8763113).

42661015 is a wasteful number, since it uses less digits than its factorization.

42661015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38489.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 42661015 is about 6531.5400174844. The cubic root of 42661015 is about 349.4167565083.

Adding to 42661015 its reverse (51016624), we get a palindrome (93677639).

The spelling of 42661015 in words is "forty-two million, six hundred sixty-one thousand, fifteen".