402124361 has 2 divisors, whose sum is σ = 402124362. Its totient is φ = 402124360.

The previous prime is 402124337. The next prime is 402124367. The reversal of 402124361 is 163421204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324684361 + 77440000 = 18019^2 + 8800^2 .

It is a cyclic number.

It is not a de Polignac number, because 402124361 - 2¹⁴ = 402107977 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (402124367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201062180 + 201062181.

It is an arithmetic number, because the mean of its divisors is an integer number (201062181).

Almost surely, 2^402124361 is an apocalyptic number.

It is an amenable number.

402124361 is a deficient number, since it is larger than the sum of its proper divisors (1).

402124361 is an equidigital number, since it uses as much as digits as its factorization.

402124361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 402124361 is about 20053.0386974144. The cubic root of 402124361 is about 738.1083661984.

Adding to 402124361 its reverse (163421204), we get a palindrome (565545565).

It can be divided in two parts, 4021 and 24361, that added together give a palindrome (28382).

The spelling of 402124361 in words is "four hundred two million, one hundred twenty-four thousand, three hundred sixty-one".