1423400 has 48 divisors (see below), whose sum is σ = 3615840. Its totient is φ = 516800.

The previous prime is 1423399. The next prime is 1423403. The reversal of 1423400 is 43241.

It is not an unprimeable number, because it can be changed into a prime (1423403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1877 + ... + 2523.

It is an arithmetic number, because the mean of its divisors is an integer number (75330).

2^1423400 is an apocalyptic number.

1423400 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 1423400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1807920).

1423400 is an abundant number, since it is smaller than the sum of its proper divisors (2192440).

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

1423400 is a wasteful number, since it uses less digits than its factorization.

1423400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 665 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1423400 is about 1193.0632841555. The cubic root of 1423400 is about 112.4887231495.

Adding to 1423400 its reverse (43241), we get a palindrome (1466641).

The spelling of 1423400 in words is "one million, four hundred twenty-three thousand, four hundred".