420040442242 has 32 divisors (see below), whose sum is σ = 647031939840. Its totient is φ = 204413637120.

The previous prime is 420040442203. The next prime is 420040442291. The reversal of 420040442242 is 242244040024.

It is a self number, because there is not a number n which added to its sum of digits gives 420040442242.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56309509 + ... + 56316967.

It is an arithmetic number, because the mean of its divisors is an integer number (20219748120).

Almost surely, 2^420040442242 is an apocalyptic number.

420040442242 is a deficient number, since it is larger than the sum of its proper divisors (226991497598).

420040442242 is a wasteful number, since it uses less digits than its factorization.

420040442242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10746.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 420040442242 its reverse (242244040024), we get a palindrome (662284482266).

The spelling of 420040442242 in words is "four hundred twenty billion, forty million, four hundred forty-two thousand, two hundred forty-two".