42111001240 has 128 divisors (see below), whose sum is σ = 125078515200. Its totient is φ = 12353402880.

The previous prime is 42111001211. The next prime is 42111001241. The reversal of 42111001240 is 4210011124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42111001241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 349770 + ... + 454489.

It is an arithmetic number, because the mean of its divisors is an integer number (977175900).

Almost surely, 2^42111001240 is an apocalyptic number.

42111001240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42111001240 is an abundant number, since it is smaller than the sum of its proper divisors (82967513960).

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

42111001240 is a wasteful number, since it uses less digits than its factorization.

42111001240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804305 (or 804301 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 42111001240 its reverse (4210011124), we get a palindrome (46321012364).

The spelling of 42111001240 in words is "forty-two billion, one hundred eleven million, one thousand, two hundred forty".