402442424 has 16 divisors (see below), whose sum is σ = 761907120. Its totient is φ = 199267200.

The previous prime is 402442423. The next prime is 402442441. The reversal of 402442424 is 424244204.

It is a junction number, because it is equal to n+sod(n) for n = 402442393 and 402442402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402442421) 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 in 3 ways as a sum of consecutive naturals, for example, 243377 + ... + 245024.

It is an arithmetic number, because the mean of its divisors is an integer number (47619195).

Almost surely, 2^402442424 is an apocalyptic number.

It is an amenable number.

402442424 is a deficient number, since it is larger than the sum of its proper divisors (359464696).

402442424 is a wasteful number, since it uses less digits than its factorization.

402442424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488510 (or 488506 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

The square root of 402442424 is about 20060.9676735695. The cubic root of 402442424 is about 738.3029188583.

Adding to 402442424 its reverse (424244204), we get a palindrome (826686628).

The spelling of 402442424 in words is "four hundred two million, four hundred forty-two thousand, four hundred twenty-four".