501042401 has 2 divisors, whose sum is σ = 501042402. Its totient is φ = 501042400.

The previous prime is 501042397. The next prime is 501042433. The reversal of 501042401 is 104240105.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 395055376 + 105987025 = 19876^2 + 10295^2 .

It is a cyclic number.

It is not a de Polignac number, because 501042401 - 2² = 501042397 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 501042401.

It is not a weakly prime, because it can be changed into another prime (501042481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 250521200 + 250521201.

It is an arithmetic number, because the mean of its divisors is an integer number (250521201).

Almost surely, 2^501042401 is an apocalyptic number.

It is an amenable number.

501042401 is a deficient number, since it is larger than the sum of its proper divisors (1).

501042401 is an equidigital number, since it uses as much as digits as its factorization.

501042401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 501042401 is about 22383.9764340476. The cubic root of 501042401 is about 794.2517126044.

Adding to 501042401 its reverse (104240105), we get a palindrome (605282506).

The spelling of 501042401 in words is "five hundred one million, forty-two thousand, four hundred one".