1241387655 has 8 divisors (see below), whose sum is σ = 1986220272. Its totient is φ = 662073408.

The previous prime is 1241387647. The next prime is 1241387657. The reversal of 1241387655 is 5567831421.

It is a happy number.

1241387655 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1241387655 - 2³ = 1241387647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1241387657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41379574 + ... + 41379603.

It is an arithmetic number, because the mean of its divisors is an integer number (248277534).

Almost surely, 2^1241387655 is an apocalyptic number.

1241387655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1241387655 is a deficient number, since it is larger than the sum of its proper divisors (744832617).

1241387655 is an equidigital number, since it uses as much as digits as its factorization.

1241387655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82759185.

The product of its digits is 201600, while the sum is 42.

The square root of 1241387655 is about 35233.3315909807. The cubic root of 1241387655 is about 1074.7376767534.

The spelling of 1241387655 in words is "one billion, two hundred forty-one million, three hundred eighty-seven thousand, six hundred fifty-five".