421227615 has 24 divisors (see below), whose sum is σ = 715948560. Its totient is φ = 211437568.

The previous prime is 421227601. The next prime is 421227617. The reversal of 421227615 is 516722124.

It is not a de Polignac number, because 421227615 - 2¹² = 421223519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421227617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44250 + ... + 52919.

It is an arithmetic number, because the mean of its divisors is an integer number (29831190).

Almost surely, 2^421227615 is an apocalyptic number.

421227615 is a deficient number, since it is larger than the sum of its proper divisors (294720945).

421227615 is a wasteful number, since it uses less digits than its factorization.

421227615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97211 (or 97194 counting only the distinct ones).

The product of its digits is 6720, while the sum is 30.

The square root of 421227615 is about 20523.8304173466. The cubic root of 421227615 is about 749.6161680420.

Adding to 421227615 its reverse (516722124), we get a palindrome (937949739).

The spelling of 421227615 in words is "four hundred twenty-one million, two hundred twenty-seven thousand, six hundred fifteen".