402421442492 has 12 divisors (see below), whose sum is σ = 704395562640. Its totient is φ = 201165567456.

The previous prime is 402421442491. The next prime is 402421442513. The reversal of 402421442492 is 294244124204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402421442491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11268392 + ... + 11304047.

It is an arithmetic number, because the mean of its divisors is an integer number (58699630220).

Almost surely, 2^402421442492 is an apocalyptic number.

It is an amenable number.

402421442492 is a deficient number, since it is larger than the sum of its proper divisors (301974120148).

402421442492 is a wasteful number, since it uses less digits than its factorization.

402421442492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22576900 (or 22576898 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 38.

Adding to 402421442492 its reverse (294244124204), we get a palindrome (696665566696).

The spelling of 402421442492 in words is "four hundred two billion, four hundred twenty-one million, four hundred forty-two thousand, four hundred ninety-two".