420445334 has 4 divisors (see below), whose sum is σ = 630668004. Its totient is φ = 210222666.

The previous prime is 420445307. The next prime is 420445351. The reversal of 420445334 is 433544024.

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

It is a junction number, because it is equal to n+sod(n) for n = 420445297 and 420445306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105111332 + ... + 105111335.

It is an arithmetic number, because the mean of its divisors is an integer number (157667001).

Almost surely, 2^420445334 is an apocalyptic number.

420445334 is a deficient number, since it is larger than the sum of its proper divisors (210222670).

420445334 is a wasteful number, since it uses less digits than its factorization.

420445334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210222669.

The product of its (nonzero) digits is 23040, while the sum is 29.

The square root of 420445334 is about 20504.7636904208. The cubic root of 420445334 is about 749.1518316941.

Adding to 420445334 its reverse (433544024), we get a palindrome (853989358).

The spelling of 420445334 in words is "four hundred twenty million, four hundred forty-five thousand, three hundred thirty-four".