1240027441385 has 4 divisors (see below), whose sum is σ = 1488032929668. Its totient is φ = 992021953104.

The previous prime is 1240027441349. The next prime is 1240027441421. The reversal of 1240027441385 is 5831447200421.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1240027441349) and next prime (1240027441421).

It can be written as a sum of positive squares in 2 ways, for example, as 620016082921 + 620011358464 = 787411^2 + 787408^2 .

It is a cyclic number.

It is not a de Polignac number, because 1240027441385 - 2⁶ = 1240027441321 is a prime.

It is a super-2 number, since 2×1240027441385² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

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 3 ways as a sum of consecutive naturals, for example, 124002744134 + ... + 124002744143.

It is an arithmetic number, because the mean of its divisors is an integer number (372008232417).

Almost surely, 2^{1240027441385} is an apocalyptic number.

It is an amenable number.

1240027441385 is a deficient number, since it is larger than the sum of its proper divisors (248005488283).

1240027441385 is an equidigital number, since it uses as much as digits as its factorization.

1240027441385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248005488282.

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 1240027441385 in words is "one trillion, two hundred forty billion, twenty-seven million, four hundred forty-one thousand, three hundred eighty-five".