1366021120 has 44 divisors (see below), whose sum is σ = 3276862164. Its totient is φ = 546406400.

The previous prime is 1366021117. The next prime is 1366021147. The reversal of 1366021120 is 211206631.

It can be written as a sum of positive squares in 2 ways, for example, as 313148416 + 1052872704 = 17696^2 + 32448^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1366021091 and 1366021100.

It is a congruent number.

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, 128281 + ... + 138520.

Almost surely, 2^1366021120 is an apocalyptic number.

1366021120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1366021120 is an abundant number, since it is smaller than the sum of its proper divisors (1910841044).

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

1366021120 is an equidigital number, since it uses as much as digits as its factorization.

1366021120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266826 (or 266808 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 1366021120 is about 36959.7229426845. The cubic root of 1366021120 is about 1109.5642907521.

Adding to 1366021120 its reverse (211206631), we get a palindrome (1577227751).

The spelling of 1366021120 in words is "one billion, three hundred sixty-six million, twenty-one thousand, one hundred twenty".