420042412 has 12 divisors (see below), whose sum is σ = 737788576. Its totient is φ = 209245680.

The previous prime is 420042407. The next prime is 420042421. The reversal of 420042412 is 214240024.

It is a self number, because there is not a number n which added to its sum of digits gives 420042412.

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 3 ways as a sum of consecutive naturals, for example, 192663 + ... + 194830.

Almost surely, 2^420042412 is an apocalyptic number.

It is an amenable number.

420042412 is a deficient number, since it is larger than the sum of its proper divisors (317746164).

420042412 is a wasteful number, since it uses less digits than its factorization.

420042412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387768 (or 387766 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 420042412 is about 20494.9362526454. The cubic root of 420042412 is about 748.9124456556.

Adding to 420042412 its reverse (214240024), we get a palindrome (634282436).

The spelling of 420042412 in words is "four hundred twenty million, forty-two thousand, four hundred twelve".