420444102 has 32 divisors (see below), whose sum is σ = 958843872. Its totient is φ = 121757184.

The previous prime is 420444097. The next prime is 420444109. The reversal of 420444102 is 201444024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420444109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157213 + ... + 159864.

It is an arithmetic number, because the mean of its divisors is an integer number (29963871).

Almost surely, 2^420444102 is an apocalyptic number.

420444102 is an abundant number, since it is smaller than the sum of its proper divisors (538399770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420444102 is a wasteful number, since it uses less digits than its factorization.

420444102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317112.

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 420444102 is about 20504.7336485993. The cubic root of 420444102 is about 749.1510999653.

Adding to 420444102 its reverse (201444024), we get a palindrome (621888126).

The spelling of 420444102 in words is "four hundred twenty million, four hundred forty-four thousand, one hundred two".