121374241 has 4 divisors (see below), whose sum is σ = 121399684. Its totient is φ = 121348800.

The previous prime is 121374167. The next prime is 121374247. The reversal of 121374241 is 142473121.

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 25040016 + 96334225 = 5004^2 + 9815^2 .

It is a 3-Lehmer number, since φ(121374241) divides (121374241-1)³.

It is a cyclic number.

It is not a de Polignac number, because 121374241 - 2¹¹ = 121372193 is a prime.

It is a deceptive number, since it divides R_121374240.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121374247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3180 + ... + 15901.

It is an arithmetic number, because the mean of its divisors is an integer number (30349921).

It is a Poulet number, since it divides 2^121374240-1.

Almost surely, 2^121374241 is an apocalyptic number.

121374241 is the 6361-st octagonal number.

It is an amenable number.

121374241 is a deficient number, since it is larger than the sum of its proper divisors (25443).

121374241 is an equidigital number, since it uses as much as digits as its factorization.

121374241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25442.

The product of its digits is 1344, while the sum is 25.

The square root of 121374241 is about 11016.9978215483. The cubic root of 121374241 is about 495.1181447749.

The spelling of 121374241 in words is "one hundred twenty-one million, three hundred seventy-four thousand, two hundred forty-one".