421026677 has 2 divisors, whose sum is σ = 421026678. Its totient is φ = 421026676.

The previous prime is 421026673. The next prime is 421026701. The reversal of 421026677 is 776620124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364084561 + 56942116 = 19081^2 + 7546^2 .

It is a cyclic number.

It is not a de Polignac number, because 421026677 - 2² = 421026673 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (421026673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210513338 + 210513339.

It is an arithmetic number, because the mean of its divisors is an integer number (210513339).

Almost surely, 2^421026677 is an apocalyptic number.

It is an amenable number.

421026677 is a deficient number, since it is larger than the sum of its proper divisors (1).

421026677 is an equidigital number, since it uses as much as digits as its factorization.

421026677 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 421026677 is about 20518.9345970984. The cubic root of 421026677 is about 749.4969527408.

The spelling of 421026677 in words is "four hundred twenty-one million, twenty-six thousand, six hundred seventy-seven".