402000422 has 4 divisors (see below), whose sum is σ = 603000636. Its totient is φ = 201000210.

The previous prime is 402000413. The next prime is 402000433. The reversal of 402000422 is 224000204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 402000397 and 402000406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500104 + ... + 100500107.

It is an arithmetic number, because the mean of its divisors is an integer number (150750159).

Almost surely, 2^402000422 is an apocalyptic number.

402000422 is a deficient number, since it is larger than the sum of its proper divisors (201000214).

402000422 is a wasteful number, since it uses less digits than its factorization.

402000422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201000213.

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 402000422 is about 20049.9481794842. The cubic root of 402000422 is about 738.0325274598.

Adding to 402000422 its reverse (224000204), we get a palindrome (626000626).

The spelling of 402000422 in words is "four hundred two million, four hundred twenty-two", and thus it is an aban number.