402322145 has 16 divisors (see below), whose sum is σ = 491724480. Its totient is φ = 315921600.

The previous prime is 402322117. The next prime is 402322171. The reversal of 402322145 is 541223204.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-402322145 is a prime.

It is a super-3 number, since 3×402322145³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 402322145.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 187730 + ... + 189860.

It is an arithmetic number, because the mean of its divisors is an integer number (30732780).

Almost surely, 2^402322145 is an apocalyptic number.

It is an amenable number.

402322145 is a deficient number, since it is larger than the sum of its proper divisors (89402335).

402322145 is a wasteful number, since it uses less digits than its factorization.

402322145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 402322145 is about 20057.9696130989. The cubic root of 402322145 is about 738.2293587001.

Adding to 402322145 its reverse (541223204), we get a palindrome (943545349).

The spelling of 402322145 in words is "four hundred two million, three hundred twenty-two thousand, one hundred forty-five".