421100115 has 32 divisors (see below), whose sum is σ = 715599360. Its totient is φ = 210722304.

The previous prime is 421100101. The next prime is 421100117. The reversal of 421100115 is 511001124.

It is a happy number.

It is not a de Polignac number, because 421100115 - 2⁸ = 421099859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 421100094 and 421100103.

It is not an unprimeable number, because it can be changed into a prime (421100117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86106 + ... + 90864.

It is an arithmetic number, because the mean of its divisors is an integer number (22362480).

Almost surely, 2^421100115 is an apocalyptic number.

421100115 is a deficient number, since it is larger than the sum of its proper divisors (294499245).

421100115 is a wasteful number, since it uses less digits than its factorization.

421100115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5131.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 421100115 is about 20520.7240369340. The cubic root of 421100115 is about 749.5405274597.

Adding to 421100115 its reverse (511001124), we get a palindrome (932101239).

The spelling of 421100115 in words is "four hundred twenty-one million, one hundred thousand, one hundred fifteen".