123012202450440 has 128 divisors (see below), whose sum is σ = 405349134105600. Its totient is φ = 29725603142400.

The previous prime is 123012202450409. The next prime is 123012202450441. The reversal of 123012202450440 is 44054202210321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 123012202450398 and 123012202450407.

It is not an unprimeable number, because it can be changed into a prime (123012202450441) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1172832786 + ... + 1172937665.

It is an arithmetic number, because the mean of its divisors is an integer number (3166790110200).

Almost surely, 2^{123012202450440} is an apocalyptic number.

123012202450440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123012202450440 is an abundant number, since it is smaller than the sum of its proper divisors (282336931655160).

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

123012202450440 is a wasteful number, since it uses less digits than its factorization.

123012202450440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2345770507 (or 2345770503 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 30.

Adding to 123012202450440 its reverse (44054202210321), we get a palindrome (167066404660761).

The spelling of 123012202450440 in words is "one hundred twenty-three trillion, twelve billion, two hundred two million, four hundred fifty thousand, four hundred forty".