420042677 has 2 divisors, whose sum is σ = 420042678. Its totient is φ = 420042676.

The previous prime is 420042673. The next prime is 420042697. The reversal of 420042677 is 776240024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417834481 + 2208196 = 20441^2 + 1486^2 .

It is a cyclic number.

It is not a de Polignac number, because 420042677 - 2² = 420042673 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420042673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210021338 + 210021339.

It is an arithmetic number, because the mean of its divisors is an integer number (210021339).

Almost surely, 2^420042677 is an apocalyptic number.

It is an amenable number.

420042677 is a deficient number, since it is larger than the sum of its proper divisors (1).

420042677 is an equidigital number, since it uses as much as digits as its factorization.

420042677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 32.

The square root of 420042677 is about 20494.9427176560. The cubic root of 420042677 is about 748.9126031490.

The spelling of 420042677 in words is "four hundred twenty million, forty-two thousand, six hundred seventy-seven".