121386733 has 4 divisors (see below), whose sum is σ = 130724188. Its totient is φ = 112049280.

The previous prime is 121386697. The next prime is 121386757. The reversal of 121386733 is 337683121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45400644 + 75986089 = 6738^2 + 8717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121386733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121386533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4668708 + ... + 4668733.

It is an arithmetic number, because the mean of its divisors is an integer number (32681047).

Almost surely, 2^121386733 is an apocalyptic number.

121386733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121386733 is a deficient number, since it is larger than the sum of its proper divisors (9337455).

121386733 is an equidigital number, since it uses as much as digits as its factorization.

121386733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9337454.

The product of its digits is 18144, while the sum is 34.

The square root of 121386733 is about 11017.5647490723. The cubic root of 121386733 is about 495.1351302672.

The spelling of 121386733 in words is "one hundred twenty-one million, three hundred eighty-six thousand, seven hundred thirty-three".