423140013520 has 120 divisors (see below), whose sum is σ = 1166014448424. Its totient is φ = 142339212288.

The previous prime is 423140013427. The next prime is 423140013529. The reversal of 423140013520 is 25310041324.

It can be written as a sum of positive squares in 4 ways, for example, as 27051038784 + 396088974736 = 164472^2 + 629356^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423140013529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 810579 + ... + 1226098.

Almost surely, 2^423140013520 is an apocalyptic number.

423140013520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423140013520 is an abundant number, since it is smaller than the sum of its proper divisors (742874434904).

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

423140013520 is a wasteful number, since it uses less digits than its factorization.

423140013520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036757 (or 2036744 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 423140013520 its reverse (25310041324), we get a palindrome (448450054844).

The spelling of 423140013520 in words is "four hundred twenty-three billion, one hundred forty million, thirteen thousand, five hundred twenty".