121503739 has 8 divisors (see below), whose sum is σ = 138935520. Its totient is φ = 104090496.

The previous prime is 121503737. The next prime is 121503749. The reversal of 121503739 is 937305121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121503739 - 2¹ = 121503737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121503739.

It is not an unprimeable number, because it can be changed into a prime (121503737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14937 + ... + 21589.

It is an arithmetic number, because the mean of its divisors is an integer number (17366940).

Almost surely, 2^121503739 is an apocalyptic number.

121503739 is a deficient number, since it is larger than the sum of its proper divisors (17431781).

121503739 is an equidigital number, since it uses as much as digits as its factorization.

121503739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9269.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 121503739 is about 11022.8734457037. The cubic root of 121503739 is about 495.2941679018.

The spelling of 121503739 in words is "one hundred twenty-one million, five hundred three thousand, seven hundred thirty-nine".