121335040 has 36 divisors (see below), whose sum is σ = 290638404. Its totient is φ = 48533504.

The previous prime is 121334999. The next prime is 121335061. The reversal of 121335040 is 40533121.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 105842944 = 3936^2 + 10288^2 .

It is a junction number, because it is equal to n+sod(n) for n = 121334999 and 121335017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46117 + ... + 48676.

It is an arithmetic number, because the mean of its divisors is an integer number (8073289).

Almost surely, 2^121335040 is an apocalyptic number.

121335040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121335040 is an abundant number, since it is smaller than the sum of its proper divisors (169303364).

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

121335040 is an frugal number, since it uses more digits than its factorization.

121335040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94814 (or 94800 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 121335040 is about 11015.2185634240. The cubic root of 121335040 is about 495.0648352309.

Adding to 121335040 its reverse (40533121), we get a palindrome (161868161).

The spelling of 121335040 in words is "one hundred twenty-one million, three hundred thirty-five thousand, forty".