42102033123440 has 80 divisors (see below), whose sum is σ = 104903820422208. Its totient is φ = 15673236277248.

The previous prime is 42102033123419. The next prime is 42102033123443. The reversal of 42102033123440 is 4432133020124.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42102033123443) 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 15 ways as a sum of consecutive naturals, for example, 309141917 + ... + 309278076.

Almost surely, 2^{42102033123440} is an apocalyptic number.

42102033123440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42102033123440 is an abundant number, since it is smaller than the sum of its proper divisors (62801787298768).

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

42102033123440 is a wasteful number, since it uses less digits than its factorization.

42102033123440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618420066 (or 618420060 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 42102033123440 its reverse (4432133020124), we get a palindrome (46534166143564).

The spelling of 42102033123440 in words is "forty-two trillion, one hundred two billion, thirty-three million, one hundred twenty-three thousand, four hundred forty".