402424032340 has 48 divisors (see below), whose sum is σ = 923537401920. Its totient is φ = 146078785280.

The previous prime is 402424032293. The next prime is 402424032343. The reversal of 402424032340 is 43230424204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402424032299 and 402424032308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402424032343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1482202 + ... + 1732561.

It is an arithmetic number, because the mean of its divisors is an integer number (19240362540).

Almost surely, 2^402424032340 is an apocalyptic number.

It is an amenable number.

402424032340 is an abundant number, since it is smaller than the sum of its proper divisors (521113369580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

402424032340 is a wasteful number, since it uses less digits than its factorization.

402424032340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3215352 (or 3215350 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 402424032340 its reverse (43230424204), we get a palindrome (445654456544).

The spelling of 402424032340 in words is "four hundred two billion, four hundred twenty-four million, thirty-two thousand, three hundred forty".