1241388739 has 8 divisors (see below), whose sum is σ = 1349936928. Its totient is φ = 1136787840.

The previous prime is 1241388719. The next prime is 1241388751. The reversal of 1241388739 is 9378831421.

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

It is a cyclic number.

It is not a de Polignac number, because 1241388739 - 2¹¹ = 1241386691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241388719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 986167 + ... + 987424.

It is an arithmetic number, because the mean of its divisors is an integer number (168742116).

Almost surely, 2^1241388739 is an apocalyptic number.

1241388739 is a deficient number, since it is larger than the sum of its proper divisors (108548189).

1241388739 is a wasteful number, since it uses less digits than its factorization.

1241388739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973645.

The product of its digits is 290304, while the sum is 46.

The square root of 1241388739 is about 35233.3469741380. The cubic root of 1241388739 is about 1074.7379895795.

The spelling of 1241388739 in words is "one billion, two hundred forty-one million, three hundred eighty-eight thousand, seven hundred thirty-nine".