121474439 has 2 divisors, whose sum is σ = 121474440. Its totient is φ = 121474438.

The previous prime is 121474421. The next prime is 121474447. The reversal of 121474439 is 934474121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121474439 is a prime.

It is equal to p_6920846 and since 121474439 and 6920846 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 121474399 and 121474408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121474489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60737219 + 60737220.

It is an arithmetic number, because the mean of its divisors is an integer number (60737220).

Almost surely, 2^121474439 is an apocalyptic number.

121474439 is a deficient number, since it is larger than the sum of its proper divisors (1).

121474439 is an equidigital number, since it uses as much as digits as its factorization.

121474439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 121474439 is about 11021.5443110301. The cubic root of 121474439 is about 495.2543521565.

The spelling of 121474439 in words is "one hundred twenty-one million, four hundred seventy-four thousand, four hundred thirty-nine".