42421115 has 8 divisors (see below), whose sum is σ = 55533168. Its totient is φ = 30851680.

The previous prime is 42421087. The next prime is 42421121. The reversal of 42421115 is 51112424.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42421115 - 2¹⁸ = 42158971 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385592 + ... + 385701.

It is an arithmetic number, because the mean of its divisors is an integer number (6941646).

Almost surely, 2^42421115 is an apocalyptic number.

42421115 is a deficient number, since it is larger than the sum of its proper divisors (13112053).

42421115 is a wasteful number, since it uses less digits than its factorization.

42421115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 771309.

The product of its digits is 320, while the sum is 20.

The square root of 42421115 is about 6513.1493918073. The cubic root of 42421115 is about 348.7605547437.

Adding to 42421115 its reverse (51112424), we get a palindrome (93533539).

The spelling of 42421115 in words is "forty-two million, four hundred twenty-one thousand, one hundred fifteen".