121700939 has 4 divisors (see below), whose sum is σ = 121964256. Its totient is φ = 121437624.

The previous prime is 121700927. The next prime is 121700941. The reversal of 121700939 is 939007121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121700939 - 2⁴ = 121700923 is a prime.

It is a super-2 number, since 2×121700939² = 29622237106963442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121700039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130964 + ... + 131889.

It is an arithmetic number, because the mean of its divisors is an integer number (30491064).

Almost surely, 2^121700939 is an apocalyptic number.

121700939 is a deficient number, since it is larger than the sum of its proper divisors (263317).

121700939 is an equidigital number, since it uses as much as digits as its factorization.

121700939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263316.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 121700939 is about 11031.8148552267. The cubic root of 121700939 is about 495.5619764425.

The spelling of 121700939 in words is "one hundred twenty-one million, seven hundred thousand, nine hundred thirty-nine".