654220242 has 48 divisors (see below), whose sum is σ = 1551572568. Its totient is φ = 197994240.

The previous prime is 654220241. The next prime is 654220243. The reversal of 654220242 is 242022456.

It is a happy number.

654220242 is a `hidden beast` number, since 654 + 2 + 2 + 0 + 2 + 4 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (654220241) and next prime (654220243).

It can be written as a sum of positive squares in 4 ways, for example, as 304118721 + 350101521 = 17439^2 + 18711^2 .

It is not an unprimeable number, because it can be changed into a prime (654220241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8643 + ... + 37190.

Almost surely, 2^654220242 is an apocalyptic number.

654220242 is an abundant number, since it is smaller than the sum of its proper divisors (897352326).

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

654220242 is a wasteful number, since it uses less digits than its factorization.

654220242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45915 (or 45912 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 654220242 is about 25577.7294144731. The cubic root of 654220242 is about 868.1098003269.

Adding to 654220242 its reverse (242022456), we get a palindrome (896242698).

The spelling of 654220242 in words is "six hundred fifty-four million, two hundred twenty thousand, two hundred forty-two".