42215299 has 4 divisors (see below), whose sum is σ = 48246064. Its totient is φ = 36184536.

The previous prime is 42215297. The next prime is 42215311. The reversal of 42215299 is 99251224.

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 42215299 - 2¹ = 42215297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42215291) 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, 3015372 + ... + 3015385.

It is an arithmetic number, because the mean of its divisors is an integer number (12061516).

Almost surely, 2^42215299 is an apocalyptic number.

42215299 is a deficient number, since it is larger than the sum of its proper divisors (6030765).

42215299 is an equidigital number, since it uses as much as digits as its factorization.

42215299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6030764.

The product of its digits is 12960, while the sum is 34.

The square root of 42215299 is about 6497.3301439899. The cubic root of 42215299 is about 348.1956088599.

The spelling of 42215299 in words is "forty-two million, two hundred fifteen thousand, two hundred ninety-nine".