420245626 has 4 divisors (see below), whose sum is σ = 630368442. Its totient is φ = 210122812.

The previous prime is 420245621. The next prime is 420245671. The reversal of 420245626 is 626542024.

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., 418243401 + 2002225 = 20451^2 + 1415^2 .

It is not an unprimeable number, because it can be changed into a prime (420245621) 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, 105061405 + ... + 105061408.

Almost surely, 2^420245626 is an apocalyptic number.

420245626 is a deficient number, since it is larger than the sum of its proper divisors (210122816).

420245626 is a wasteful number, since it uses less digits than its factorization.

420245626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210122815.

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

The square root of 420245626 is about 20499.8933167956. The cubic root of 420245626 is about 749.0331993011.

The spelling of 420245626 in words is "four hundred twenty million, two hundred forty-five thousand, six hundred twenty-six".