121434041040 has 160 divisors (see below), whose sum is σ = 410535390720. Its totient is φ = 29513023488.

The previous prime is 121434040969. The next prime is 121434041041. The reversal of 121434041040 is 40140434121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121434041040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121434041041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144 + ... + 492816.

It is an arithmetic number, because the mean of its divisors is an integer number (2565846192).

Almost surely, 2^121434041040 is an apocalyptic number.

121434041040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121434041040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (205267695360).

121434041040 is an abundant number, since it is smaller than the sum of its proper divisors (289101349680).

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

121434041040 is a wasteful number, since it uses less digits than its factorization.

121434041040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492781 (or 492775 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 121434041040 its reverse (40140434121), we get a palindrome (161574475161).

The spelling of 121434041040 in words is "one hundred twenty-one billion, four hundred thirty-four million, forty-one thousand, forty".