1366123404 has 12 divisors (see below), whose sum is σ = 3187621304. Its totient is φ = 455374464.

The previous prime is 1366123399. The next prime is 1366123439. The reversal of 1366123404 is 4043216631.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56921797 + ... + 56921820.

Almost surely, 2^1366123404 is an apocalyptic number.

It is an amenable number.

1366123404 is an abundant number, since it is smaller than the sum of its proper divisors (1821497900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1366123404 is a wasteful number, since it uses less digits than its factorization.

1366123404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113843624 (or 113843622 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1366123404 is about 36961.1066392769. The cubic root of 1366123404 is about 1109.5919837943.

The spelling of 1366123404 in words is "one billion, three hundred sixty-six million, one hundred twenty-three thousand, four hundred four".