1421700 has 72 divisors (see below), whose sum is σ = 4708032. Its totient is φ = 324480.

The previous prime is 1421689. The next prime is 1421711. The reversal of 1421700 is 71241.

It is an interprime number because it is at equal distance from previous prime (1421689) and next prime (1421711).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1421700.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1762 + ... + 2438.

2^1421700 is an apocalyptic number.

1421700 is a gapful number since it is divisible by the number (10) 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 1421700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2354016).

1421700 is an abundant number, since it is smaller than the sum of its proper divisors (3286332).

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

1421700 is a wasteful number, since it uses less digits than its factorization.

1421700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 701 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 56, while the sum is 15.

The square root of 1421700 is about 1192.3506195746. The cubic root of 1421700 is about 112.4439226693.

Adding to 1421700 its reverse (71241), we get a palindrome (1492941).

The spelling of 1421700 in words is "one million, four hundred twenty-one thousand, seven hundred".