42650015 has 4 divisors (see below), whose sum is σ = 51180024. Its totient is φ = 34120008.

The previous prime is 42649993. The next prime is 42650021. The reversal of 42650015 is 51005624.

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 42650015 - 2⁸ = 42649759 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 3 ways as a sum of consecutive naturals, for example, 4264997 + ... + 4265006.

It is an arithmetic number, because the mean of its divisors is an integer number (12795006).

Almost surely, 2^42650015 is an apocalyptic number.

42650015 is a deficient number, since it is larger than the sum of its proper divisors (8530009).

42650015 is an equidigital number, since it uses as much as digits as its factorization.

42650015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8530008.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 42650015 is about 6530.6978953248. The cubic root of 42650015 is about 349.3867219461.

Adding to 42650015 its reverse (51005624), we get a palindrome (93655639).

The spelling of 42650015 in words is "forty-two million, six hundred fifty thousand, fifteen".