123143544215420 has 48 divisors (see below), whose sum is σ = 262431888919200. Its totient is φ = 48532858110720.

The previous prime is 123143544215411. The next prime is 123143544215431. The reversal of 123143544215420 is 24512445341321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157397111 + ... + 158177550.

It is an arithmetic number, because the mean of its divisors is an integer number (5467331019150).

Almost surely, 2^{123143544215420} is an apocalyptic number.

123143544215420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123143544215420 is an abundant number, since it is smaller than the sum of its proper divisors (139288344703780).

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

123143544215420 is a wasteful number, since it uses less digits than its factorization.

123143544215420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315574958 (or 315574956 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 41.

Adding to 123143544215420 its reverse (24512445341321), we get a palindrome (147655989556741).

The spelling of 123143544215420 in words is "one hundred twenty-three trillion, one hundred forty-three billion, five hundred forty-four million, two hundred fifteen thousand, four hundred twenty".