123236122201440 has 48 divisors (see below), whose sum is σ = 388193784936048. Its totient is φ = 32862965920256.

The previous prime is 123236122201427. The next prime is 123236122201477. The reversal of 123236122201440 is 44102221632321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128370960147 + ... + 128370961106.

It is an arithmetic number, because the mean of its divisors is an integer number (8087370519501).

Almost surely, 2^{123236122201440} is an apocalyptic number.

123236122201440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123236122201440 is an abundant number, since it is smaller than the sum of its proper divisors (264957662734608).

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

123236122201440 is a wasteful number, since it uses less digits than its factorization.

123236122201440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256741921271 (or 256741921263 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 123236122201440 its reverse (44102221632321), we get a palindrome (167338343833761).

The spelling of 123236122201440 in words is "one hundred twenty-three trillion, two hundred thirty-six billion, one hundred twenty-two million, two hundred one thousand, four hundred forty".