1241240287779 has 24 divisors (see below), whose sum is σ = 1825626360272. Its totient is φ = 812439875520.

The previous prime is 1241240287751. The next prime is 1241240287789. The reversal of 1241240287779 is 9777820421421.

It is a happy number.

1241240287779 is a `hidden beast` number, since 1 + 241 + 240 + 28 + 77 + 79 = 666.

It is not a de Polignac number, because 1241240287779 - 2⁸ = 1241240287523 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1241240287789) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1766344 + ... + 2366949.

Almost surely, 2^{1241240287779} is an apocalyptic number.

1241240287779 is a deficient number, since it is larger than the sum of its proper divisors (584386072493).

1241240287779 is a wasteful number, since it uses less digits than its factorization.

1241240287779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4133907 (or 4133904 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The spelling of 1241240287779 in words is "one trillion, two hundred forty-one billion, two hundred forty million, two hundred eighty-seven thousand, seven hundred seventy-nine".