427938121 has 16 divisors (see below), whose sum is σ = 486259200. Its totient is φ = 373344768.

The previous prime is 427938113. The next prime is 427938139. The reversal of 427938121 is 121839724.

It is a cyclic number.

It is not a de Polignac number, because 427938121 - 2³ = 427938113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (427930121) 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, 116505 + ... + 120121.

It is an arithmetic number, because the mean of its divisors is an integer number (30391200).

Almost surely, 2^427938121 is an apocalyptic number.

It is an amenable number.

427938121 is a deficient number, since it is larger than the sum of its proper divisors (58321079).

427938121 is a wasteful number, since it uses less digits than its factorization.

427938121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128.

The product of its digits is 24192, while the sum is 37.

The square root of 427938121 is about 20686.6652943388. The cubic root of 427938121 is about 753.5758842324.

The spelling of 427938121 in words is "four hundred twenty-seven million, nine hundred thirty-eight thousand, one hundred twenty-one".