421227405 has 32 divisors (see below), whose sum is σ = 781413120. Its totient is φ = 214885440.

The previous prime is 421227361. The next prime is 421227431. The reversal of 421227405 is 504722124.

It is not a de Polignac number, because 421227405 - 2⁶ = 421227341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64726 + ... + 70935.

It is an arithmetic number, because the mean of its divisors is an integer number (24419160).

Almost surely, 2^421227405 is an apocalyptic number.

421227405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

421227405 is a deficient number, since it is larger than the sum of its proper divisors (360185715).

421227405 is a wasteful number, since it uses less digits than its factorization.

421227405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135698 (or 135692 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 421227405 is about 20523.8253013419. The cubic root of 421227405 is about 749.6160434701.

Adding to 421227405 its reverse (504722124), we get a palindrome (925949529).

The spelling of 421227405 in words is "four hundred twenty-one million, two hundred twenty-seven thousand, four hundred five".