121416437 has 2 divisors, whose sum is σ = 121416438. Its totient is φ = 121416436.

The previous prime is 121416377. The next prime is 121416469. The reversal of 121416437 is 734614121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121308196 + 108241 = 11014^2 + 329^2 .

It is a cyclic number.

It is not a de Polignac number, because 121416437 - 2¹² = 121412341 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121416497) 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, 60708218 + 60708219.

It is an arithmetic number, because the mean of its divisors is an integer number (60708219).

Almost surely, 2^121416437 is an apocalyptic number.

It is an amenable number.

121416437 is a deficient number, since it is larger than the sum of its proper divisors (1).

121416437 is an equidigital number, since it uses as much as digits as its factorization.

121416437 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 29.

The square root of 121416437 is about 11018.9126959061. The cubic root of 121416437 is about 495.1755144015.

The spelling of 121416437 in words is "one hundred twenty-one million, four hundred sixteen thousand, four hundred thirty-seven".