421243650 has 36 divisors (see below), whose sum is σ = 1131742482. Its totient is φ = 112331520.

The previous prime is 421243649. The next prime is 421243679. The reversal of 421243650 is 56342124.

421243650 is a `hidden beast` number, since 4 + 2 + 1 + 2 + 4 + 3 + 650 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 270174969 + 151068681 = 16437^2 + 12291^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 467599 + ... + 468498.

Almost surely, 2^421243650 is an apocalyptic number.

421243650 is an abundant number, since it is smaller than the sum of its proper divisors (710498832).

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

421243650 is a wasteful number, since it uses less digits than its factorization.

421243650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936115 (or 936107 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 421243650 is about 20524.2210570828. The cubic root of 421243650 is about 749.6256798770.

Adding to 421243650 its reverse (56342124), we get a palindrome (477585774).

The spelling of 421243650 in words is "four hundred twenty-one million, two hundred forty-three thousand, six hundred fifty".