402042505403 has 16 divisors (see below), whose sum is σ = 508729115904. Its totient is φ = 308604051360.

The previous prime is 402042505393. The next prime is 402042505411. The reversal of 402042505403 is 304505240204.

It is not a de Polignac number, because 402042505403 - 2¹² = 402042501307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402042505433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38960000 + ... + 38970317.

It is an arithmetic number, because the mean of its divisors is an integer number (31795569744).

Almost surely, 2^402042505403 is an apocalyptic number.

402042505403 is a deficient number, since it is larger than the sum of its proper divisors (106686610501).

402042505403 is a wasteful number, since it uses less digits than its factorization.

402042505403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77930402.

The product of its (nonzero) digits is 19200, while the sum is 29.

Adding to 402042505403 its reverse (304505240204), we get a palindrome (706547745607).

The spelling of 402042505403 in words is "four hundred two billion, forty-two million, five hundred five thousand, four hundred three".