402202445 has 4 divisors (see below), whose sum is σ = 482642940. Its totient is φ = 321761952.

The previous prime is 402202441. The next prime is 402202457. The reversal of 402202445 is 544202204.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79245604 + 322956841 = 8902^2 + 17971^2 .

It is a cyclic number.

It is not a de Polignac number, because 402202445 - 2² = 402202441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 402202445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402202441) 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 in 3 ways as a sum of consecutive naturals, for example, 40220240 + ... + 40220249.

It is an arithmetic number, because the mean of its divisors is an integer number (120660735).

Almost surely, 2^402202445 is an apocalyptic number.

It is an amenable number.

402202445 is a deficient number, since it is larger than the sum of its proper divisors (80440495).

402202445 is an equidigital number, since it uses as much as digits as its factorization.

402202445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80440494.

The product of its (nonzero) digits is 2560, while the sum is 23.

The square root of 402202445 is about 20054.9855397604. The cubic root of 402202445 is about 738.1561380895.

Adding to 402202445 its reverse (544202204), we get a palindrome (946404649).

The spelling of 402202445 in words is "four hundred two million, two hundred two thousand, four hundred forty-five".