402321041 has 4 divisors (see below), whose sum is σ = 402419892. Its totient is φ = 402222192.

The previous prime is 402321013. The next prime is 402321053. The reversal of 402321041 is 140123204.

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 226201600 + 176119441 = 15040^2 + 13271^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402321041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402321011) 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, 43046 + ... + 51551.

It is an arithmetic number, because the mean of its divisors is an integer number (100604973).

Almost surely, 2^402321041 is an apocalyptic number.

It is an amenable number.

402321041 is a deficient number, since it is larger than the sum of its proper divisors (98851).

402321041 is an equidigital number, since it uses as much as digits as its factorization.

402321041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98850.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 402321041 is about 20057.9420928469. The cubic root of 402321041 is about 738.2286834485.

Adding to 402321041 its reverse (140123204), we get a palindrome (542444245).

The spelling of 402321041 in words is "four hundred two million, three hundred twenty-one thousand, forty-one".