121490730240 has 288 divisors, whose sum is σ = 445565836800. Its totient is φ = 27901992960.

The previous prime is 121490730169. The next prime is 121490730241. The reversal of 121490730240 is 42037094121.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121490730241) 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, 726871 + ... + 878249.

It is an arithmetic number, because the mean of its divisors is an integer number (1547103600).

Almost surely, 2^121490730240 is an apocalyptic number.

121490730240 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 121490730240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222782918400).

121490730240 is an abundant number, since it is smaller than the sum of its proper divisors (324075106560).

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

121490730240 is a wasteful number, since it uses less digits than its factorization.

121490730240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151433 (or 151419 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 121490730240 in words is "one hundred twenty-one billion, four hundred ninety million, seven hundred thirty thousand, two hundred forty".