2138420227 has 8 divisors (see below), whose sum is σ = 2265309200. Its totient is φ = 2012965344.

The previous prime is 2138420197. The next prime is 2138420237. The reversal of 2138420227 is 7220248312.

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 2138420227 - 2¹¹ = 2138418179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2138420237) 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, 355452 + ... + 361417.

It is an arithmetic number, because the mean of its divisors is an integer number (283163650).

Almost surely, 2^2138420227 is an apocalyptic number.

2138420227 is a deficient number, since it is larger than the sum of its proper divisors (126888973).

2138420227 is a wasteful number, since it uses less digits than its factorization.

2138420227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717045.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 2138420227 is about 46243.0559868182. The cubic root of 2138420227 is about 1288.3415635015.

Adding to 2138420227 its reverse (7220248312), we get a palindrome (9358668539).

The spelling of 2138420227 in words is "two billion, one hundred thirty-eight million, four hundred twenty thousand, two hundred twenty-seven".