402731041 has 2 divisors, whose sum is σ = 402731042. Its totient is φ = 402731040.

The previous prime is 402731039. The next prime is 402731053. The reversal of 402731041 is 140137204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 399200400 + 3530641 = 19980^2 + 1879^2 .

It is a cyclic number.

It is not a de Polignac number, because 402731041 - 2¹ = 402731039 is a prime.

Together with 402731039, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (402732041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201365520 + 201365521.

It is an arithmetic number, because the mean of its divisors is an integer number (201365521).

Almost surely, 2^402731041 is an apocalyptic number.

It is an amenable number.

402731041 is a deficient number, since it is larger than the sum of its proper divisors (1).

402731041 is an equidigital number, since it uses as much as digits as its factorization.

402731041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 402731041 is about 20068.1598807663. The cubic root of 402731041 is about 738.4793713077.

Adding to 402731041 its reverse (140137204), we get a palindrome (542868245).

It can be divided in two parts, 40273 and 1041, that added together give a palindrome (41314).

The spelling of 402731041 in words is "four hundred two million, seven hundred thirty-one thousand, forty-one".