42306513 has 4 divisors (see below), whose sum is σ = 56408688. Its totient is φ = 28204340.

The previous prime is 42306491. The next prime is 42306527. The reversal of 42306513 is 31560324.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42306513 - 2⁶ = 42306449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42306713) 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, 7051083 + ... + 7051088.

It is an arithmetic number, because the mean of its divisors is an integer number (14102172).

Almost surely, 2^42306513 is an apocalyptic number.

It is an amenable number.

42306513 is a deficient number, since it is larger than the sum of its proper divisors (14102175).

42306513 is a wasteful number, since it uses less digits than its factorization.

42306513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14102174.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 42306513 is about 6504.3457011447. The cubic root of 42306513 is about 348.4462089011.

Adding to 42306513 its reverse (31560324), we get a palindrome (73866837).

The spelling of 42306513 in words is "forty-two million, three hundred six thousand, five hundred thirteen".