420770458 has 4 divisors (see below), whose sum is σ = 631155690. Its totient is φ = 210385228.

The previous prime is 420770419. The next prime is 420770459. The reversal of 420770458 is 854077024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 417262329 + 3508129 = 20427^2 + 1873^2 .

It is not an unprimeable number, because it can be changed into a prime (420770459) 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 as a sum of consecutive naturals, namely, 105192613 + ... + 105192616.

Almost surely, 2^420770458 is an apocalyptic number.

420770458 is a deficient number, since it is larger than the sum of its proper divisors (210385232).

420770458 is a wasteful number, since it uses less digits than its factorization.

420770458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210385231.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 420770458 is about 20512.6901697461. The cubic root of 420770458 is about 749.3448845242.

The spelling of 420770458 in words is "four hundred twenty million, seven hundred seventy thousand, four hundred fifty-eight".