1642212 has 108 divisors (see below), whose sum is σ = 5083260. Its totient is φ = 443520.

The previous prime is 1642211. The next prime is 1642231. The reversal of 1642212 is 2122461.

1642212 is a `hidden beast` number, since 1 + 642 + 21 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 527076 + 1115136 = 726^2 + 1056^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (1642211) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 56614 + ... + 56642.

2^1642212 is an apocalyptic number.

1642212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1642212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2541630).

1642212 is an abundant number, since it is smaller than the sum of its proper divisors (3441048).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642212 is a wasteful number, since it uses less digits than its factorization.

1642212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 58 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1642212 is about 1281.4881973705. The cubic root of 1642212 is about 117.9803663590.

Adding to 1642212 its reverse (2122461), we get a palindrome (3764673).

Subtracting 1642212 from its reverse (2122461), we obtain a square (480249 = 693²).

The spelling of 1642212 in words is "one million, six hundred forty-two thousand, two hundred twelve".