1366042005 has 24 divisors (see below), whose sum is σ = 2372374368. Its totient is φ = 727150176.

The previous prime is 1366041997. The next prime is 1366042019. The reversal of 1366042005 is 5002406631.

1366042005 is a `hidden beast` number, since 1 + 36 + 604 + 20 + 0 + 5 = 666.

It is not a de Polignac number, because 1366042005 - 2³ = 1366041997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1366042005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5487 + ... + 52556.

It is an arithmetic number, because the mean of its divisors is an integer number (98848932).

Almost surely, 2^1366042005 is an apocalyptic number.

1366042005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1366042005 is a deficient number, since it is larger than the sum of its proper divisors (1006332363).

1366042005 is a wasteful number, since it uses less digits than its factorization.

1366042005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58577 (or 58574 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1366042005 is about 36960.0054788957. The cubic root of 1366042005 is about 1109.5699454065.

Adding to 1366042005 its reverse (5002406631), we get a palindrome (6368448636).

The spelling of 1366042005 in words is "one billion, three hundred sixty-six million, forty-two thousand, five".