121242037 has 4 divisors (see below), whose sum is σ = 138562336. Its totient is φ = 103921740.

The previous prime is 121241987. The next prime is 121242041. The reversal of 121242037 is 730242121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121242037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121241999 and 121242017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121242047) by changing a digit.

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, 8660139 + ... + 8660152.

It is an arithmetic number, because the mean of its divisors is an integer number (34640584).

Almost surely, 2^121242037 is an apocalyptic number.

It is an amenable number.

121242037 is a deficient number, since it is larger than the sum of its proper divisors (17320299).

121242037 is an equidigital number, since it uses as much as digits as its factorization.

121242037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17320298.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 121242037 is about 11010.9961856319. The cubic root of 121242037 is about 494.9383142531.

Adding to 121242037 its reverse (730242121), we get a palindrome (851484158).

It can be divided in two parts, 12124 and 2037, that added together give a square (14161 = 119²).

The spelling of 121242037 in words is "one hundred twenty-one million, two hundred forty-two thousand, thirty-seven".