42911122500 has 135 divisors (see below), whose sum is σ = 135642059553. Its totient is φ = 11434680000.

The previous prime is 42911122493. The next prime is 42911122547. The reversal of 42911122500 is 522111924.

The square root of 42911122500 is 207150.

It is a perfect power (a square), and thus also a powerful number.

42911122500 is a `hidden beast` number, since 4 + 29 + 11 + 122 + 500 = 666.

It can be written as a sum of positive squares in 7 ways, for example, as 34589304324 + 8321818176 = 185982^2 + 91224^2 .

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 31071810 + ... + 31073190.

Almost surely, 2^42911122500 is an apocalyptic number.

42911122500 is the 207150-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42911122500

42911122500 is an abundant number, since it is smaller than the sum of its proper divisors (92730937053).

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

42911122500 is an equidigital number, since it uses as much as digits as its factorization.

42911122500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The spelling of 42911122500 in words is "forty-two billion, nine hundred eleven million, one hundred twenty-two thousand, five hundred".