42261721712 has 40 divisors (see below), whose sum is σ = 95165635200. Its totient is φ = 17805177792.

The previous prime is 42261721651. The next prime is 42261721751. The reversal of 42261721712 is 21712716224.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3191162 + ... + 3204377.

It is an arithmetic number, because the mean of its divisors is an integer number (2379140880).

Almost surely, 2^42261721712 is an apocalyptic number.

It is an amenable number.

42261721712 is an abundant number, since it is smaller than the sum of its proper divisors (52903913488).

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

42261721712 is a wasteful number, since it uses less digits than its factorization.

42261721712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6395613 (or 6395607 counting only the distinct ones).

The product of its digits is 18816, while the sum is 35.

The spelling of 42261721712 in words is "forty-two billion, two hundred sixty-one million, seven hundred twenty-one thousand, seven hundred twelve".