1642227 has 16 divisors (see below), whose sum is σ = 2357760. Its totient is φ = 1013472.

The previous prime is 1642211. The next prime is 1642231. The reversal of 1642227 is 7222461.

It is not a de Polignac number, because 1642227 - 2⁴ = 1642211 is a prime.

1642227 is a lucky number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 1642197 and 1642206.

It is not an unprimeable number, because it can be changed into a prime (1642247) 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, 2373 + ... + 2985.

It is an arithmetic number, because the mean of its divisors is an integer number (147360).

2^1642227 is an apocalyptic number.

1642227 is a deficient number, since it is larger than the sum of its proper divisors (715533).

1642227 is a wasteful number, since it uses less digits than its factorization.

1642227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682.

The product of its digits is 1344, while the sum is 24.

The square root of 1642227 is about 1281.4940499277. The cubic root of 1642227 is about 117.9807255696.

Adding to 1642227 its reverse (7222461), we get a palindrome (8864688).

The spelling of 1642227 in words is "one million, six hundred forty-two thousand, two hundred twenty-seven".