123534220404 has 24 divisors (see below), whose sum is σ = 329424587968. Its totient is φ = 35295491520.

The previous prime is 123534220367. The next prime is 123534220427. The reversal of 123534220404 is 404022435321.

It is a super-2 number, since 2×123534220404² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 735322657 + ... + 735322824.

Almost surely, 2^123534220404 is an apocalyptic number.

123534220404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

123534220404 is an abundant number, since it is smaller than the sum of its proper divisors (205890367564).

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

123534220404 is a wasteful number, since it uses less digits than its factorization.

123534220404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470645495 (or 1470645493 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 123534220404 its reverse (404022435321), we get a palindrome (527556655725).

The spelling of 123534220404 in words is "one hundred twenty-three billion, five hundred thirty-four million, two hundred twenty thousand, four hundred four".