42013605 has 32 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 21254912.

The previous prime is 42013583. The next prime is 42013619. The reversal of 42013605 is 50631024.

It is a happy number.

It is not a de Polignac number, because 42013605 - 2¹² = 42009509 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24847 + ... + 26483.

It is an arithmetic number, because the mean of its divisors is an integer number (2211300).

Almost surely, 2^42013605 is an apocalyptic number.

It is an amenable number.

42013605 is a deficient number, since it is larger than the sum of its proper divisors (28747995).

42013605 is a wasteful number, since it uses less digits than its factorization.

42013605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1733.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 42013605 is about 6481.7902619570. The cubic root of 42013605 is about 347.6401932482.

Adding to 42013605 its reverse (50631024), we get a palindrome (92644629).

The spelling of 42013605 in words is "forty-two million, thirteen thousand, six hundred five".