121752434140 has 12 divisors (see below), whose sum is σ = 255680111736. Its totient is φ = 48700973648.

The previous prime is 121752434081. The next prime is 121752434179. The reversal of 121752434140 is 41434257121.

It is a junction number, because it is equal to n+sod(n) for n = 121752434096 and 121752434105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3043810834 + ... + 3043810873.

It is an arithmetic number, because the mean of its divisors is an integer number (21306675978).

Almost surely, 2^121752434140 is an apocalyptic number.

121752434140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121752434140 is an abundant number, since it is smaller than the sum of its proper divisors (133927677596).

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

121752434140 is a wasteful number, since it uses less digits than its factorization.

121752434140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6087621716 (or 6087621714 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The spelling of 121752434140 in words is "one hundred twenty-one billion, seven hundred fifty-two million, four hundred thirty-four thousand, one hundred forty".