402144120042 has 48 divisors (see below), whose sum is σ = 935715507552. Its totient is φ = 114884209440.

The previous prime is 402144120029. The next prime is 402144120047. The reversal of 402144120042 is 240021441204.

It is a junction number, because it is equal to n+sod(n) for n = 402144119994 and 402144120021.

It is not an unprimeable number, because it can be changed into a prime (402144120047) 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 23 ways as a sum of consecutive naturals, for example, 2443113 + ... + 2602515.

It is an arithmetic number, because the mean of its divisors is an integer number (19494073074).

Almost surely, 2^402144120042 is an apocalyptic number.

402144120042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

402144120042 is an abundant number, since it is smaller than the sum of its proper divisors (533571387510).

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

402144120042 is a wasteful number, since it uses less digits than its factorization.

402144120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168003 (or 167996 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 402144120042 its reverse (240021441204), we get a palindrome (642165561246).

The spelling of 402144120042 in words is "four hundred two billion, one hundred forty-four million, one hundred twenty thousand, forty-two".