420222650 has 24 divisors (see below), whose sum is σ = 815599584. Its totient is φ = 160780400.

The previous prime is 420222631. The next prime is 420222661. The reversal of 420222650 is 56222024.

It is a Harshad number since it is a multiple of its sum of digits (23).

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 11 ways as a sum of consecutive naturals, for example, 181556 + ... + 183855.

It is an arithmetic number, because the mean of its divisors is an integer number (33983316).

Almost surely, 2^420222650 is an apocalyptic number.

420222650 is a deficient number, since it is larger than the sum of its proper divisors (395376934).

420222650 is a wasteful number, since it uses less digits than its factorization.

420222650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365446 (or 365441 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 420222650 is about 20499.3329159756. The cubic root of 420222650 is about 749.0195484746.

Adding to 420222650 its reverse (56222024), we get a palindrome (476444674).

The spelling of 420222650 in words is "four hundred twenty million, two hundred twenty-two thousand, six hundred fifty".