1240145204441 has 24 divisors (see below), whose sum is σ = 1468140226560. Its totient is φ = 1040575741920.

The previous prime is 1240145204423. The next prime is 1240145204497. The reversal of 1240145204441 is 1444025410421.

It is not a de Polignac number, because 1240145204441 - 2⁶ = 1240145204377 is a prime.

It is a super-2 number, since 2×1240145204441² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240145204398 and 1240145204407.

It is not an unprimeable number, because it can be changed into a prime (1240145204401) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 18085166 + ... + 18153608.

It is an arithmetic number, because the mean of its divisors is an integer number (61172509440).

Almost surely, 2^{1240145204441} is an apocalyptic number.

1240145204441 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1240145204441 is a deficient number, since it is larger than the sum of its proper divisors (227995022119).

1240145204441 is a wasteful number, since it uses less digits than its factorization.

1240145204441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79997 (or 79986 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The spelling of 1240145204441 in words is "one trillion, two hundred forty billion, one hundred forty-five million, two hundred four thousand, four hundred forty-one".