121237859 has 2 divisors, whose sum is σ = 121237860. Its totient is φ = 121237858.

The previous prime is 121237849. The next prime is 121237913. The reversal of 121237859 is 958732121.

It is a weak prime.

It is an emirp because it is prime and its reverse (958732121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121237859 - 2⁴ = 121237843 is a prime.

It is not a weakly prime, because it can be changed into another prime (121237819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60618929 + 60618930.

It is an arithmetic number, because the mean of its divisors is an integer number (60618930).

Almost surely, 2^121237859 is an apocalyptic number.

121237859 is a deficient number, since it is larger than the sum of its proper divisors (1).

121237859 is an equidigital number, since it uses as much as digits as its factorization.

121237859 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 121237859 is about 11010.8064645602. The cubic root of 121237859 is about 494.9326289972.

The spelling of 121237859 in words is "one hundred twenty-one million, two hundred thirty-seven thousand, eight hundred fifty-nine".