426722421 has 16 divisors (see below), whose sum is σ = 573246720. Its totient is φ = 282347520.

The previous prime is 426722407. The next prime is 426722437. The reversal of 426722421 is 124227624.

It is not a de Polignac number, because 426722421 - 2⁶ = 426722357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426722521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467956 + ... + 468866.

It is an arithmetic number, because the mean of its divisors is an integer number (35827920).

Almost surely, 2^426722421 is an apocalyptic number.

It is an amenable number.

426722421 is a deficient number, since it is larger than the sum of its proper divisors (146524299).

426722421 is a wasteful number, since it uses less digits than its factorization.

426722421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916.

The product of its digits is 10752, while the sum is 30.

The square root of 426722421 is about 20657.2607332144. The cubic root of 426722421 is about 752.8616134494.

The spelling of 426722421 in words is "four hundred twenty-six million, seven hundred twenty-two thousand, four hundred twenty-one".