670121143 has 2 divisors, whose sum is σ = 670121144. Its totient is φ = 670121142.

The previous prime is 670121087. The next prime is 670121149. The reversal of 670121143 is 341121076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670121143 - 2⁹ = 670120631 is a prime.

It is a super-3 number, since 3×670121143³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670121149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335060571 + 335060572.

It is an arithmetic number, because the mean of its divisors is an integer number (335060572).

Almost surely, 2^670121143 is an apocalyptic number.

670121143 is a deficient number, since it is larger than the sum of its proper divisors (1).

670121143 is an equidigital number, since it uses as much as digits as its factorization.

670121143 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 670121143 is about 25886.6981865204. The cubic root of 670121143 is about 875.0867475356.

The spelling of 670121143 in words is "six hundred seventy million, one hundred twenty-one thousand, one hundred forty-three".