42002400402 has 24 divisors (see below), whose sum is σ = 93940853760. Its totient is φ = 13549161240.

The previous prime is 42002400397. The next prime is 42002400403. The reversal of 42002400402 is 20400420024.

42002400402 is a `hidden beast` number, since 4 + 20 + 0 + 240 + 0 + 402 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (42002400403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37636002 + ... + 37637117.

It is an arithmetic number, because the mean of its divisors is an integer number (3914202240).

Almost surely, 2^42002400402 is an apocalyptic number.

42002400402 is an abundant number, since it is smaller than the sum of its proper divisors (51938453358).

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

42002400402 is a wasteful number, since it uses less digits than its factorization.

42002400402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75273158 (or 75273155 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 42002400402 its reverse (20400420024), we get a palindrome (62402820426).

The spelling of 42002400402 in words is "forty-two billion, two million, four hundred thousand, four hundred two".