401502405 has 16 divisors (see below), whose sum is σ = 645453504. Its totient is φ = 213118080.

The previous prime is 401502397. The next prime is 401502443. The reversal of 401502405 is 504205104.

It is not a de Polignac number, because 401502405 - 2³ = 401502397 is a prime.

It is a super-2 number, since 2×401502405² = 322408362441568050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 60264 + ... + 66593.

It is an arithmetic number, because the mean of its divisors is an integer number (40340844).

Almost surely, 2^401502405 is an apocalyptic number.

It is an amenable number.

401502405 is a deficient number, since it is larger than the sum of its proper divisors (243951099).

401502405 is a wasteful number, since it uses less digits than its factorization.

401502405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127076.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 401502405 is about 20037.5249220057. The cubic root of 401502405 is about 737.7276317348.

Adding to 401502405 its reverse (504205104), we get a palindrome (905707509).

The spelling of 401502405 in words is "four hundred one million, five hundred two thousand, four hundred five".