42030515 has 4 divisors (see below), whose sum is σ = 50436624. Its totient is φ = 33624408.

The previous prime is 42030497. The next prime is 42030533. The reversal of 42030515 is 51503024.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (42030497) and next prime (42030533).

It is a cyclic number.

It is not a de Polignac number, because 42030515 - 2⁸ = 42030259 is a prime.

It is a Duffinian 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, 4203047 + ... + 4203056.

It is an arithmetic number, because the mean of its divisors is an integer number (12609156).

Almost surely, 2^42030515 is an apocalyptic number.

42030515 is a deficient number, since it is larger than the sum of its proper divisors (8406109).

42030515 is an equidigital number, since it uses as much as digits as its factorization.

42030515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8406108.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 42030515 is about 6483.0945543004. The cubic root of 42030515 is about 347.6868274052.

Adding to 42030515 its reverse (51503024), we get a palindrome (93533539).

The spelling of 42030515 in words is "forty-two million, thirty thousand, five hundred fifteen".