402344120 has 32 divisors (see below), whose sum is σ = 926331120. Its totient is φ = 157194240.

The previous prime is 402344119. The next prime is 402344123. The reversal of 402344120 is 21443204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 402344092 and 402344101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402344123) 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 7 ways as a sum of consecutive naturals, for example, 115241 + ... + 118680.

Almost surely, 2^402344120 is an apocalyptic number.

402344120 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402344120 is an abundant number, since it is smaller than the sum of its proper divisors (523987000).

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

402344120 is a wasteful number, since it uses less digits than its factorization.

402344120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233975 (or 233971 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 402344120 is about 20058.5173928683. The cubic root of 402344120 is about 738.2427992518.

Adding to 402344120 its reverse (21443204), we get a palindrome (423787324).

The spelling of 402344120 in words is "four hundred two million, three hundred forty-four thousand, one hundred twenty".