420273442 has 8 divisors (see below), whose sum is σ = 635989356. Its totient is φ = 208276992.

The previous prime is 420273433. The next prime is 420273449. The reversal of 420273442 is 244372024.

It can be written as a sum of positive squares in 2 ways, for example, as 398361681 + 21911761 = 19959^2 + 4681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 420273442.

It is not an unprimeable number, because it can be changed into a prime (420273449) by changing a digit.

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, 929583 + ... + 930034.

Almost surely, 2^420273442 is an apocalyptic number.

420273442 is a deficient number, since it is larger than the sum of its proper divisors (215715914).

420273442 is a wasteful number, since it uses less digits than its factorization.

420273442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1859732.

The product of its (nonzero) digits is 10752, while the sum is 28.

The square root of 420273442 is about 20500.5717481245. The cubic root of 420273442 is about 749.0497250712.

The spelling of 420273442 in words is "four hundred twenty million, two hundred seventy-three thousand, four hundred forty-two".