420102322 has 4 divisors (see below), whose sum is σ = 630153486. Its totient is φ = 210051160.

The previous prime is 420102307. The next prime is 420102377. The reversal of 420102322 is 223201024.

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., 332661121 + 87441201 = 18239^2 + 9351^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420102296 and 420102305.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105025579 + ... + 105025582.

Almost surely, 2^420102322 is an apocalyptic number.

420102322 is a deficient number, since it is larger than the sum of its proper divisors (210051164).

420102322 is a wasteful number, since it uses less digits than its factorization.

420102322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210051163.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 420102322 is about 20496.3977810736. The cubic root of 420102322 is about 748.9480493711.

Adding to 420102322 its reverse (223201024), we get a palindrome (643303346).

The spelling of 420102322 in words is "four hundred twenty million, one hundred two thousand, three hundred twenty-two".