1436043121 has 4 divisors (see below), whose sum is σ = 1439158644. Its totient is φ = 1432927600.

The previous prime is 1436043107. The next prime is 1436043127. The reversal of 1436043121 is 1213406341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 236390625 + 1199652496 = 15375^2 + 34636^2 .

It is a cyclic number.

It is not a de Polignac number, because 1436043121 - 2¹¹ = 1436041073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1436043127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1557070 + ... + 1557991.

It is an arithmetic number, because the mean of its divisors is an integer number (359789661).

Almost surely, 2^1436043121 is an apocalyptic number.

It is an amenable number.

1436043121 is a deficient number, since it is larger than the sum of its proper divisors (3115523).

1436043121 is an equidigital number, since it uses as much as digits as its factorization.

1436043121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115522.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1436043121 is about 37895.1595985556. The cubic root of 1436043121 is about 1128.2079620196.

Adding to 1436043121 its reverse (1213406341), we get a palindrome (2649449462).

The spelling of 1436043121 in words is "one billion, four hundred thirty-six million, forty-three thousand, one hundred twenty-one".