240042191481 has 12 divisors (see below), whose sum is σ = 346732843860. Its totient is φ = 160025712000.

The previous prime is 240042191447. The next prime is 240042191497. The reversal of 240042191481 is 184191240042.

It can be written as a sum of positive squares in 2 ways, for example, as 39803841081 + 200238350400 = 199509^2 + 447480^2 .

It is not a de Polignac number, because 240042191481 - 2¹⁰ = 240042190457 is a prime.

It is a super-2 number, since 2×240042191481² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (240042191401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 592981 + ... + 911981.

It is an arithmetic number, because the mean of its divisors is an integer number (28894403655).

Almost surely, 2^240042191481 is an apocalyptic number.

It is an amenable number.

240042191481 is a deficient number, since it is larger than the sum of its proper divisors (106690652379).

240042191481 is a wasteful number, since it uses less digits than its factorization.

240042191481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402616 (or 402613 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 240042191481 in words is "two hundred forty billion, forty-two million, one hundred ninety-one thousand, four hundred eighty-one".