402243041 has 2 divisors, whose sum is σ = 402243042. Its totient is φ = 402243040.

The previous prime is 402243029. The next prime is 402243059. The reversal of 402243041 is 140342204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306985441 + 95257600 = 17521^2 + 9760^2 .

It is a cyclic number.

It is not a de Polignac number, because 402243041 - 2¹⁰ = 402242017 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (402243241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201121520 + 201121521.

It is an arithmetic number, because the mean of its divisors is an integer number (201121521).

Almost surely, 2^402243041 is an apocalyptic number.

It is an amenable number.

402243041 is a deficient number, since it is larger than the sum of its proper divisors (1).

402243041 is an equidigital number, since it uses as much as digits as its factorization.

402243041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402243041 is about 20055.9976316313. The cubic root of 402243041 is about 738.1809723314.

Adding to 402243041 its reverse (140342204), we get a palindrome (542585245).

The spelling of 402243041 in words is "four hundred two million, two hundred forty-three thousand, forty-one".