420242656 has 12 divisors (see below), whose sum is σ = 827352792. Its totient is φ = 210121312.

The previous prime is 420242653. The next prime is 420242657. The reversal of 420242656 is 656242024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420242653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6566260 + ... + 6566323.

It is an arithmetic number, because the mean of its divisors is an integer number (68946066).

Almost surely, 2^420242656 is an apocalyptic number.

It is an amenable number.

420242656 is a deficient number, since it is larger than the sum of its proper divisors (407110136).

420242656 is a wasteful number, since it uses less digits than its factorization.

420242656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132593 (or 13132585 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 420242656 is about 20499.8208772662. The cubic root of 420242656 is about 749.0314347506.

The spelling of 420242656 in words is "four hundred twenty million, two hundred forty-two thousand, six hundred fifty-six".