121952387 has 2 divisors, whose sum is σ = 121952388. Its totient is φ = 121952386.

The previous prime is 121952381. The next prime is 121952399. The reversal of 121952387 is 783259121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121952387 - 2⁶ = 121952323 is a prime.

It is a Chen prime.

It is equal to p_6946463 and since 121952387 and 6946463 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121952387.

It is not a weakly prime, because it can be changed into another prime (121952381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60976193 + 60976194.

It is an arithmetic number, because the mean of its divisors is an integer number (60976194).

Almost surely, 2^121952387 is an apocalyptic number.

121952387 is a deficient number, since it is larger than the sum of its proper divisors (1).

121952387 is an equidigital number, since it uses as much as digits as its factorization.

121952387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 121952387 is about 11043.2054676167. The cubic root of 121952387 is about 495.9030374869.

The spelling of 121952387 in words is "one hundred twenty-one million, nine hundred fifty-two thousand, three hundred eighty-seven".