402501441 has 8 divisors (see below), whose sum is σ = 536764320. Its totient is φ = 268286432.

The previous prime is 402501439. The next prime is 402501493. The reversal of 402501441 is 144105204.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 402501441 - 2¹ = 402501439 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (402501641) 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 7 ways as a sum of consecutive naturals, for example, 19405 + ... + 34373.

It is an arithmetic number, because the mean of its divisors is an integer number (67095540).

Almost surely, 2^402501441 is an apocalyptic number.

It is an amenable number.

402501441 is a deficient number, since it is larger than the sum of its proper divisors (134262879).

402501441 is a wasteful number, since it uses less digits than its factorization.

402501441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23935.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 402501441 is about 20062.4385606536. The cubic root of 402501441 is about 738.3390070794.

Adding to 402501441 its reverse (144105204), we get a palindrome (546606645).

The spelling of 402501441 in words is "four hundred two million, five hundred one thousand, four hundred forty-one".