121040410140 has 72 divisors (see below), whose sum is σ = 395398680768. Its totient is φ = 29794561920.

The previous prime is 121040410111. The next prime is 121040410171. The reversal of 121040410140 is 41014040121.

121040410140 is a `hidden beast` number, since 1 + 210 + 4 + 0 + 410 + 1 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25860996 + ... + 25865675.

It is an arithmetic number, because the mean of its divisors is an integer number (5491648344).

Almost surely, 2^121040410140 is an apocalyptic number.

121040410140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121040410140 is an abundant number, since it is smaller than the sum of its proper divisors (274358270628).

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

121040410140 is a wasteful number, since it uses less digits than its factorization.

121040410140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51726699 (or 51726694 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121040410140 its reverse (41014040121), we get a palindrome (162054450261).

The spelling of 121040410140 in words is "one hundred twenty-one billion, forty million, four hundred ten thousand, one hundred forty".