123420887 has 2 divisors, whose sum is σ = 123420888. Its totient is φ = 123420886.

The previous prime is 123420853. The next prime is 123420893. The reversal of 123420887 is 788024321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123420887 - 2⁸ = 123420631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123420287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61710443 + 61710444.

It is an arithmetic number, because the mean of its divisors is an integer number (61710444).

Almost surely, 2^123420887 is an apocalyptic number.

123420887 is a deficient number, since it is larger than the sum of its proper divisors (1).

123420887 is an equidigital number, since it uses as much as digits as its factorization.

123420887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 123420887 is about 11109.4953530752. The cubic root of 123420887 is about 497.8855871203.

The spelling of 123420887 in words is "one hundred twenty-three million, four hundred twenty thousand, eight hundred eighty-seven".