402002422 has 8 divisors (see below), whose sum is σ = 608974272. Its totient is φ = 199011000.

The previous prime is 402002411. The next prime is 402002431. The reversal of 402002422 is 224200204.

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

It is a junction number, because it is equal to n+sod(n) for n = 402002396 and 402002405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994854 + ... + 995257.

It is an arithmetic number, because the mean of its divisors is an integer number (76121784).

Almost surely, 2^402002422 is an apocalyptic number.

402002422 is a deficient number, since it is larger than the sum of its proper divisors (206971850).

402002422 is a wasteful number, since it uses less digits than its factorization.

402002422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990214.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 402002422 is about 20049.9980548627. The cubic root of 402002422 is about 738.0337513910.

Adding to 402002422 its reverse (224200204), we get a palindrome (626202626).

The spelling of 402002422 in words is "four hundred two million, two thousand, four hundred twenty-two".