1421712 has 50 divisors (see below), whose sum is σ = 4118598. Its totient is φ = 473472.

The previous prime is 1421711. The next prime is 1421731. The reversal of 1421712 is 2171241.

It can be written as a sum of positive squares in only one way, i.e., 1089936 + 331776 = 1044^2 + 576^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1421711) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 748 + ... + 1844.

2^1421712 is an apocalyptic number.

1421712 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 1421712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2059299).

1421712 is an abundant number, since it is smaller than the sum of its proper divisors (2696886).

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

1421712 is a wasteful number, since it uses less digits than its factorization.

1421712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1102 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1421712 is about 1192.3556516409. The cubic root of 1421712 is about 112.4442390331. Note that the first 3 decimals are identical.

Adding to 1421712 its reverse (2171241), we get a palindrome (3592953).

The spelling of 1421712 in words is "one million, four hundred twenty-one thousand, seven hundred twelve".