1423530 has 24 divisors (see below), whose sum is σ = 3701412. Its totient is φ = 379584.

The previous prime is 1423511. The next prime is 1423547. The reversal of 1423530 is 353241.

It can be written as a sum of positive squares in 2 ways, for example, as 1390041 + 33489 = 1179^2 + 183^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7819 + ... + 7998.

2^1423530 is an apocalyptic number.

1423530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1423530 is an abundant number, since it is smaller than the sum of its proper divisors (2277882).

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

1423530 is a wasteful number, since it uses less digits than its factorization.

1423530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15830 (or 15827 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 1423530 is about 1193.1177645145. The cubic root of 1423530 is about 112.4921476001.

Adding to 1423530 its reverse (353241), we get a palindrome (1776771).

It can be divided in two parts, 1423 and 530, that added together give a triangular number (1953 = T₆₂).

The spelling of 1423530 in words is "one million, four hundred twenty-three thousand, five hundred thirty".