426403641 has 4 divisors (see below), whose sum is σ = 568538192. Its totient is φ = 284269092.

The previous prime is 426403633. The next prime is 426403657. The reversal of 426403641 is 146304624.

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 not a de Polignac number, because 426403641 - 2³ = 426403633 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 426403599 and 426403608.

It is not an unprimeable number, because it can be changed into a prime (426403631) 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, 71067271 + ... + 71067276.

It is an arithmetic number, because the mean of its divisors is an integer number (142134548).

Almost surely, 2^426403641 is an apocalyptic number.

It is an amenable number.

426403641 is a deficient number, since it is larger than the sum of its proper divisors (142134551).

426403641 is a wasteful number, since it uses less digits than its factorization.

426403641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142134550.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 426403641 is about 20649.5433605685. The cubic root of 426403641 is about 752.6740934122.

The spelling of 426403641 in words is "four hundred twenty-six million, four hundred three thousand, six hundred forty-one".