1423534520 has 16 divisors (see below), whose sum is σ = 3202952760. Its totient is φ = 569413792.

The previous prime is 1423534507. The next prime is 1423534523. The reversal of 1423534520 is 254353241.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423534523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17794142 + ... + 17794221.

Almost surely, 2^1423534520 is an apocalyptic number.

1423534520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423534520 is an abundant number, since it is smaller than the sum of its proper divisors (1779418240).

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

1423534520 is a wasteful number, since it uses less digits than its factorization.

1423534520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35588374 (or 35588370 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 1423534520 is about 37729.7564264600. The cubic root of 1423534520 is about 1124.9226666183.

Adding to 1423534520 its reverse (254353241), we get a palindrome (1677887761).

The spelling of 1423534520 in words is "one billion, four hundred twenty-three million, five hundred thirty-four thousand, five hundred twenty".