42113615 has 4 divisors (see below), whose sum is σ = 50536344. Its totient is φ = 33690888.

The previous prime is 42113611. The next prime is 42113629. The reversal of 42113615 is 51631124.

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 42113615 - 2² = 42113611 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 (42113611) 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, 4211357 + ... + 4211366.

It is an arithmetic number, because the mean of its divisors is an integer number (12634086).

Almost surely, 2^42113615 is an apocalyptic number.

42113615 is a deficient number, since it is larger than the sum of its proper divisors (8422729).

42113615 is an equidigital number, since it uses as much as digits as its factorization.

42113615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8422728.

The product of its digits is 720, while the sum is 23.

The square root of 42113615 is about 6489.5003659758. The cubic root of 42113615 is about 347.9158178154.

Adding to 42113615 its reverse (51631124), we get a palindrome (93744739).

It can be divided in two parts, 4211361 and 5, that multiplied together give a triangular number (21056805 = T₆₄₈₉).

The spelling of 42113615 in words is "forty-two million, one hundred thirteen thousand, six hundred fifteen".