420622042402 has 8 divisors (see below), whose sum is σ = 630967384476. Its totient is φ = 210299580912.

The previous prime is 420622042319. The next prime is 420622042417. The reversal of 420622042402 is 204240226024.

It can be written as a sum of positive squares in 2 ways, for example, as 329557513041 + 91064529361 = 574071^2 + 301769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5674113 + ... + 5747764.

Almost surely, 2^420622042402 is an apocalyptic number.

420622042402 is a deficient number, since it is larger than the sum of its proper divisors (210345342074).

420622042402 is a wasteful number, since it uses less digits than its factorization.

420622042402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11440292.

The product of its (nonzero) digits is 12288, while the sum is 28.

Adding to 420622042402 its reverse (204240226024), we get a palindrome (624862268426).

The spelling of 420622042402 in words is "four hundred twenty billion, six hundred twenty-two million, forty-two thousand, four hundred two".