402001200342 has 40 divisors (see below), whose sum is σ = 1029463394256. Its totient is φ = 114857485488.

The previous prime is 402001200301. The next prime is 402001200371. The reversal of 402001200342 is 243002100204.

402001200342 is a `hidden beast` number, since 4 + 0 + 200 + 120 + 0 + 342 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 177248073 + ... + 177250340.

Almost surely, 2^402001200342 is an apocalyptic number.

402001200342 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402001200342 is an abundant number, since it is smaller than the sum of its proper divisors (627462193914).

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

402001200342 is a wasteful number, since it uses less digits than its factorization.

402001200342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354498434 (or 354498425 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 402001200342 its reverse (243002100204), we get a palindrome (645003300546).

The spelling of 402001200342 in words is "four hundred two billion, one million, two hundred thousand, three hundred forty-two".