402332140 has 96 divisors (see below), whose sum is σ = 993484800. Its totient is φ = 136801728.

The previous prime is 402332137. The next prime is 402332143. The reversal of 402332140 is 41233204.

It is an interprime number because it is at equal distance from previous prime (402332137) and next prime (402332143).

It is not an unprimeable number, because it can be changed into a prime (402332143) 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, 1529649 + ... + 1529911.

It is an arithmetic number, because the mean of its divisors is an integer number (10348800).

Almost surely, 2^402332140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402332140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (496742400).

402332140 is an abundant number, since it is smaller than the sum of its proper divisors (591152660).

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

402332140 is a wasteful number, since it uses less digits than its factorization.

402332140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 402332140 is about 20058.2187643868. The cubic root of 402332140 is about 738.2354719946.

Adding to 402332140 its reverse (41233204), we get a palindrome (443565344).

It can be divided in two parts, 4023 and 32140, that added together give a palindrome (36163).

The spelling of 402332140 in words is "four hundred two million, three hundred thirty-two thousand, one hundred forty".