121513744 has 20 divisors (see below), whose sum is σ = 256836240. Its totient is φ = 55233440.

The previous prime is 121513723. The next prime is 121513751. The reversal of 121513744 is 447315121.

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, 345034 + ... + 345385.

It is an arithmetic number, because the mean of its divisors is an integer number (12841812).

Almost surely, 2^121513744 is an apocalyptic number.

It is an amenable number.

121513744 is an abundant number, since it is smaller than the sum of its proper divisors (135322496).

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

121513744 is a wasteful number, since it uses less digits than its factorization.

121513744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 690438 (or 690432 counting only the distinct ones).

The product of its digits is 3360, while the sum is 28.

The square root of 121513744 is about 11023.3272653950. The cubic root of 121513744 is about 495.3077622219.

Adding to 121513744 its reverse (447315121), we get a palindrome (568828865).

The spelling of 121513744 in words is "one hundred twenty-one million, five hundred thirteen thousand, seven hundred forty-four".