420074861 has 4 divisors (see below), whose sum is σ = 429012672. Its totient is φ = 411137052.

The previous prime is 420074849. The next prime is 420074899. The reversal of 420074861 is 168470024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420074861 - 2⁶ = 420074797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420074821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4468835 + ... + 4468928.

It is an arithmetic number, because the mean of its divisors is an integer number (107253168).

Almost surely, 2^420074861 is an apocalyptic number.

It is an amenable number.

420074861 is a deficient number, since it is larger than the sum of its proper divisors (8937811).

420074861 is an equidigital number, since it uses as much as digits as its factorization.

420074861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8937810.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 420074861 is about 20495.7278719249. The cubic root of 420074861 is about 748.9317300846.

The spelling of 420074861 in words is "four hundred twenty million, seventy-four thousand, eight hundred sixty-one".