123470424520 has 128 divisors (see below), whose sum is σ = 292031308800. Its totient is φ = 46921190400.

The previous prime is 123470424479. The next prime is 123470424527. The reversal of 123470424520 is 25424074321.

It is a super-2 number, since 2×123470424520² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123470424527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49845522 + ... + 49847998.

It is an arithmetic number, because the mean of its divisors is an integer number (2281494600).

Almost surely, 2^123470424520 is an apocalyptic number.

123470424520 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 123470424520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146015654400).

123470424520 is an abundant number, since it is smaller than the sum of its proper divisors (168560884280).

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

123470424520 is a wasteful number, since it uses less digits than its factorization.

123470424520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239 (or 3235 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

Adding to 123470424520 its reverse (25424074321), we get a palindrome (148894498841).

The spelling of 123470424520 in words is "one hundred twenty-three billion, four hundred seventy million, four hundred twenty-four thousand, five hundred twenty".