121874413 has 2 divisors, whose sum is σ = 121874414. Its totient is φ = 121874412.

The previous prime is 121874399. The next prime is 121874419. The reversal of 121874413 is 314478121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116575209 + 5299204 = 10797^2 + 2302^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121874413 is a prime.

It is equal to p_6942262 and since 121874413 and 6942262 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121874419) 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 as a sum of consecutive naturals, namely, 60937206 + 60937207.

It is an arithmetic number, because the mean of its divisors is an integer number (60937207).

Almost surely, 2^121874413 is an apocalyptic number.

It is an amenable number.

121874413 is a deficient number, since it is larger than the sum of its proper divisors (1).

121874413 is an equidigital number, since it uses as much as digits as its factorization.

121874413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 121874413 is about 11039.6744970130. The cubic root of 121874413 is about 495.7973246799.

The spelling of 121874413 in words is "one hundred twenty-one million, eight hundred seventy-four thousand, four hundred thirteen".