121423140432 has 60 divisors (see below), whose sum is σ = 370708532064. Its totient is φ = 36794890560.

The previous prime is 121423140413. The next prime is 121423140439. The reversal of 121423140432 is 234041324121.

121423140432 is a `hidden beast` number, since 1 + 21 + 4 + 231 + 404 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 121423140396 and 121423140405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121423140439) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38326428 + ... + 38329595.

Almost surely, 2^121423140432 is an apocalyptic number.

121423140432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121423140432 is an abundant number, since it is smaller than the sum of its proper divisors (249285391632).

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

121423140432 is a wasteful number, since it uses less digits than its factorization.

121423140432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76656048 (or 76656039 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 121423140432 its reverse (234041324121), we get a palindrome (355464464553).

The spelling of 121423140432 in words is "one hundred twenty-one billion, four hundred twenty-three million, one hundred forty thousand, four hundred thirty-two".