421020727 has 16 divisors (see below), whose sum is σ = 444579840. Its totient is φ = 397936000.

The previous prime is 421020713. The next prime is 421020731. The reversal of 421020727 is 727020124.

It is a cyclic number.

It is not a de Polignac number, because 421020727 - 2⁷ = 421020599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421020707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1049727 + ... + 1050127.

It is an arithmetic number, because the mean of its divisors is an integer number (27786240).

Almost surely, 2^421020727 is an apocalyptic number.

421020727 is a deficient number, since it is larger than the sum of its proper divisors (23559113).

421020727 is a wasteful number, since it uses less digits than its factorization.

421020727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 421020727 is about 20518.7896085515. The cubic root of 421020727 is about 749.4934220636.

The spelling of 421020727 in words is "four hundred twenty-one million, twenty thousand, seven hundred twenty-seven".