402351226 has 4 divisors (see below), whose sum is σ = 603526842. Its totient is φ = 201175612.

The previous prime is 402351221. The next prime is 402351227. The reversal of 402351226 is 622153204.

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., 355360201 + 46991025 = 18851^2 + 6855^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 402351226.

It is not an unprimeable number, because it can be changed into a prime (402351221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100587805 + ... + 100587808.

Almost surely, 2^402351226 is an apocalyptic number.

402351226 is a deficient number, since it is larger than the sum of its proper divisors (201175616).

402351226 is a wasteful number, since it uses less digits than its factorization.

402351226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201175615.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 402351226 is about 20058.6945238218. The cubic root of 402351226 is about 738.2471453842.

The spelling of 402351226 in words is "four hundred two million, three hundred fifty-one thousand, two hundred twenty-six".