402321192 has 128 divisors (see below), whose sum is σ = 1268386560. Its totient is φ = 103495680.

The previous prime is 402321191. The next prime is 402321197. The reversal of 402321192 is 291123204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (402321191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87298 + ... + 91790.

It is an arithmetic number, because the mean of its divisors is an integer number (9909270).

Almost surely, 2^402321192 is an apocalyptic number.

402321192 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402321192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (634193280).

402321192 is an abundant number, since it is smaller than the sum of its proper divisors (866065368).

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

402321192 is a wasteful number, since it uses less digits than its factorization.

402321192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4563 (or 4559 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 402321192 is about 20057.9458569416. The cubic root of 402321192 is about 738.2287758064.

Adding to 402321192 its reverse (291123204), we get a palindrome (693444396).

It can be divided in two parts, 40 and 2321192, that added together give a palindrome (2321232).

The spelling of 402321192 in words is "four hundred two million, three hundred twenty-one thousand, one hundred ninety-two".