402123224303461 has 4 divisors (see below), whose sum is σ = 402123281275692. Its totient is φ = 402123167331232.

The previous prime is 402123224303453. The next prime is 402123224303531. The reversal of 402123224303461 is 164303422321204.

It is a happy number.

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 182769174216225 + 219354050087236 = 13519215^2 + 14810606^2 .

It is a cyclic number.

It is not a de Polignac number, because 402123224303461 - 2³ = 402123224303453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402123224303461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402123224303401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16105006 + ... + 32613151.

It is an arithmetic number, because the mean of its divisors is an integer number (100530820318923).

Almost surely, 2^{402123224303461} is an apocalyptic number.

It is an amenable number.

402123224303461 is a deficient number, since it is larger than the sum of its proper divisors (56972231).

402123224303461 is an equidigital number, since it uses as much as digits as its factorization.

402123224303461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56972230.

The product of its (nonzero) digits is 165888, while the sum is 37.

Adding to 402123224303461 its reverse (164303422321204), we get a palindrome (566426646624665).

The spelling of 402123224303461 in words is "four hundred two trillion, one hundred twenty-three billion, two hundred twenty-four million, three hundred three thousand, four hundred sixty-one".