402222345 has 16 divisors (see below), whose sum is σ = 735492480. Its totient is φ = 183873024.

The previous prime is 402222323. The next prime is 402222347. The reversal of 402222345 is 543222204.

It is a happy number.

It is not a de Polignac number, because 402222345 - 2⁶ = 402222281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402222347) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1915240 + ... + 1915449.

It is an arithmetic number, because the mean of its divisors is an integer number (45968280).

Almost surely, 2^402222345 is an apocalyptic number.

It is an amenable number.

402222345 is a deficient number, since it is larger than the sum of its proper divisors (333270135).

402222345 is a wasteful number, since it uses less digits than its factorization.

402222345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3830704.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 402222345 is about 20055.4816696084. The cubic root of 402222345 is about 738.1683119463.

Adding to 402222345 its reverse (543222204), we get a palindrome (945444549).

The spelling of 402222345 in words is "four hundred two million, two hundred twenty-two thousand, three hundred forty-five".