421080669 has 6 divisors (see below), whose sum is σ = 608227646. Its totient is φ = 280720440.

The previous prime is 421080637. The next prime is 421080677. The reversal of 421080669 is 966080124.

It can be written as a sum of positive squares in only one way, i.e., 419225625 + 1855044 = 20475^2 + 1362^2 .

It is not a de Polignac number, because 421080669 - 2⁵ = 421080637 is a prime.

It is a super-2 number, since 2×421080669² = 354617859610975122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421080269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23393362 + ... + 23393379.

Almost surely, 2^421080669 is an apocalyptic number.

It is an amenable number.

421080669 is a deficient number, since it is larger than the sum of its proper divisors (187146977).

421080669 is a wasteful number, since it uses less digits than its factorization.

421080669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46786747 (or 46786744 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 421080669 is about 20520.2502177727. The cubic root of 421080669 is about 749.5289895942.

The spelling of 421080669 in words is "four hundred twenty-one million, eighty thousand, six hundred sixty-nine".