240121187 has 2 divisors, whose sum is σ = 240121188. Its totient is φ = 240121186.

The previous prime is 240121171. The next prime is 240121207. The reversal of 240121187 is 781121042.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 240121187 - 2⁴ = 240121171 is a prime.

It is not a weakly prime, because it can be changed into another prime (240121087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120060593 + 120060594.

It is an arithmetic number, because the mean of its divisors is an integer number (120060594).

Almost surely, 2^240121187 is an apocalyptic number.

240121187 is a deficient number, since it is larger than the sum of its proper divisors (1).

240121187 is an equidigital number, since it uses as much as digits as its factorization.

240121187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 240121187 is about 15495.8441848129. The cubic root of 240121187 is about 621.5510825306.

The spelling of 240121187 in words is "two hundred forty million, one hundred twenty-one thousand, one hundred eighty-seven".