121403687 has 2 divisors, whose sum is σ = 121403688. Its totient is φ = 121403686.

The previous prime is 121403677. The next prime is 121403701. The reversal of 121403687 is 786304121.

It is a weak prime.

It is an emirp because it is prime and its reverse (786304121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121403687 - 2⁸ = 121403431 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 (121403627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60701843 + 60701844.

It is an arithmetic number, because the mean of its divisors is an integer number (60701844).

Almost surely, 2^121403687 is an apocalyptic number.

121403687 is a deficient number, since it is larger than the sum of its proper divisors (1).

121403687 is an equidigital number, since it uses as much as digits as its factorization.

121403687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 121403687 is about 11018.3341299853. The cubic root of 121403687 is about 495.1581809197.

The spelling of 121403687 in words is "one hundred twenty-one million, four hundred three thousand, six hundred eighty-seven".