653404242 has 32 divisors (see below), whose sum is σ = 1316240640. Its totient is φ = 216236160.

The previous prime is 653404223. The next prime is 653404273. The reversal of 653404242 is 242404356.

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 15 ways as a sum of consecutive naturals, for example, 628359 + ... + 629397.

It is an arithmetic number, because the mean of its divisors is an integer number (41132520).

Almost surely, 2^653404242 is an apocalyptic number.

653404242 is an abundant number, since it is smaller than the sum of its proper divisors (662836398).

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

653404242 is a wasteful number, since it uses less digits than its factorization.

653404242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1698.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 653404242 is about 25561.7730605684. The cubic root of 653404242 is about 867.7487229851.

Adding to 653404242 its reverse (242404356), we get a palindrome (895808598).

The spelling of 653404242 in words is "six hundred fifty-three million, four hundred four thousand, two hundred forty-two".