42121002111240 has 256 divisors, whose sum is σ = 149473581465600. Its totient is φ = 9395481959424.

The previous prime is 42121002111203. The next prime is 42121002111247. The reversal of 42121002111240 is 4211120012124.

It is not an unprimeable number, because it can be changed into a prime (42121002111247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 30211464 + ... + 31574903.

It is an arithmetic number, because the mean of its divisors is an integer number (583881177600).

Almost surely, 2^{42121002111240} is an apocalyptic number.

42121002111240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42121002111240 is an abundant number, since it is smaller than the sum of its proper divisors (107352579354360).

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

42121002111240 is a wasteful number, since it uses less digits than its factorization.

42121002111240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61786436 (or 61786432 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 42121002111240 its reverse (4211120012124), we get a palindrome (46332122123364).

The spelling of 42121002111240 in words is "forty-two trillion, one hundred twenty-one billion, two million, one hundred eleven thousand, two hundred forty".