421405115 has 8 divisors (see below), whose sum is σ = 505809360. Its totient is φ = 337041952.

The previous prime is 421405111. The next prime is 421405133. The reversal of 421405115 is 511504124.

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

It is a cyclic number.

It is not a de Polignac number, because 421405115 - 2² = 421405111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421405111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20912 + ... + 35778.

It is an arithmetic number, because the mean of its divisors is an integer number (63226170).

Almost surely, 2^421405115 is an apocalyptic number.

421405115 is a deficient number, since it is larger than the sum of its proper divisors (84404245).

421405115 is a wasteful number, since it uses less digits than its factorization.

421405115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20541.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 421405115 is about 20528.1542034349. The cubic root of 421405115 is about 749.7214461861.

Adding to 421405115 its reverse (511504124), we get a palindrome (932909239).

Subtracting 421405115 from its reverse (511504124), we obtain a palindrome (90099009).

The spelling of 421405115 in words is "four hundred twenty-one million, four hundred five thousand, one hundred fifteen".