402424020202 has 4 divisors (see below), whose sum is σ = 603636030306. Its totient is φ = 201212010100.

The previous prime is 402424020151. The next prime is 402424020223. The reversal of 402424020202 is 202020424204.

It is a happy number.

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., 243541263001 + 158882757201 = 493499^2 + 398601^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606005049 + ... + 100606005052.

Almost surely, 2^402424020202 is an apocalyptic number.

402424020202 is a deficient number, since it is larger than the sum of its proper divisors (201212010104).

402424020202 is a wasteful number, since it uses less digits than its factorization.

402424020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201212010103.

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 402424020202 its reverse (202020424204), we get a palindrome (604444444406).

The spelling of 402424020202 in words is "four hundred two billion, four hundred twenty-four million, twenty thousand, two hundred two".