121440432247040 has 72 divisors (see below), whose sum is σ = 293606363131200. Its totient is φ = 48122189920256.

The previous prime is 121440432246983. The next prime is 121440432247049. The reversal of 121440432247040 is 40742234044121.

It is a junction number, because it is equal to n+sod(n) for n = 121440432246985 and 121440432247003.

It is not an unprimeable number, because it can be changed into a prime (121440432247049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 443205740 + ... + 443479659.

It is an arithmetic number, because the mean of its divisors is an integer number (4077866154600).

Almost surely, 2^{121440432247040} is an apocalyptic number.

121440432247040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121440432247040 is an abundant number, since it is smaller than the sum of its proper divisors (172165930884160).

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

121440432247040 is an equidigital number, since it uses as much as digits as its factorization.

121440432247040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886685527 (or 886685513 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 38.

The spelling of 121440432247040 in words is "one hundred twenty-one trillion, four hundred forty billion, four hundred thirty-two million, two hundred forty-seven thousand, forty".