420521226 has 16 divisors (see below), whose sum is σ = 847183104. Its totient is φ = 139150304.

The previous prime is 420521221. The next prime is 420521263. The reversal of 420521226 is 622125024.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 420521196 and 420521205.

It is not an unprimeable number, because it can be changed into a prime (420521221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254970 + ... + 256613.

It is an arithmetic number, because the mean of its divisors is an integer number (52948944).

Almost surely, 2^420521226 is an apocalyptic number.

420521226 is an abundant number, since it is smaller than the sum of its proper divisors (426661878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420521226 is a wasteful number, since it uses less digits than its factorization.

420521226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511725.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 420521226 is about 20506.6142012766. The cubic root of 420521226 is about 749.1969039114.

The spelling of 420521226 in words is "four hundred twenty million, five hundred twenty-one thousand, two hundred twenty-six".