426461021 has 4 divisors (see below), whose sum is σ = 487384032. Its totient is φ = 365538012.

The previous prime is 426460987. The next prime is 426461029. The reversal of 426461021 is 120164624.

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 de Polignac number, because none of the positive numbers 2^k-426461021 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 (426461029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30461495 + ... + 30461508.

It is an arithmetic number, because the mean of its divisors is an integer number (121846008).

Almost surely, 2^426461021 is an apocalyptic number.

It is an amenable number.

426461021 is a deficient number, since it is larger than the sum of its proper divisors (60923011).

426461021 is an equidigital number, since it uses as much as digits as its factorization.

426461021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60923010.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 426461021 is about 20650.9326908012. The cubic root of 426461021 is about 752.7078536793.

The spelling of 426461021 in words is "four hundred twenty-six million, four hundred sixty-one thousand, twenty-one".