42615 has 12 divisors (see below), whose sum is σ = 73944. Its totient is φ = 22704.

The previous prime is 42611. The next prime is 42641. The reversal of 42615 is 51624.

It is a happy number.

It is not a de Polignac number, because 42615 - 2² = 42611 is a prime.

It is a nialpdrome in base 9 and base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 42615.

It is not an unprimeable number, because it can be changed into a prime (42611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 429 + ... + 518.

It is an arithmetic number, because the mean of its divisors is an integer number (6162).

2⁴²⁶¹⁵ is an apocalyptic number.

42615 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42615 is a deficient number, since it is larger than the sum of its proper divisors (31329).

42615 is a wasteful number, since it uses less digits than its factorization.

42615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 955 counting only the distinct ones).

The product of its digits is 240, while the sum is 18.

The square root of 42615 is about 206.4340088261. The cubic root of 42615 is about 34.9291082077.

Subtracting 42615 from its reverse (51624), we obtain a palindrome (9009).

It can be divided in two parts, 426 and 15, that added together give a square (441 = 21²).

The spelling of 42615 in words is "forty-two thousand, six hundred fifteen".