1440401431442 has 4 divisors (see below), whose sum is σ = 2160602147166. Its totient is φ = 720200715720.

The previous prime is 1440401431367. The next prime is 1440401431457. The reversal of 1440401431442 is 2441341040441.

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

It can be written as a sum of positive squares in only one way, i.e., 1362755051641 + 77646379801 = 1167371^2 + 278651^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1440401431399 and 1440401431408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360100357859 + ... + 360100357862.

Almost surely, 2^{1440401431442} is an apocalyptic number.

1440401431442 is a deficient number, since it is larger than the sum of its proper divisors (720200715724).

1440401431442 is an equidigital number, since it uses as much as digits as its factorization.

1440401431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720200715723.

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 1440401431442 its reverse (2441341040441), we get a palindrome (3881742471883).

The spelling of 1440401431442 in words is "one trillion, four hundred forty billion, four hundred one million, four hundred thirty-one thousand, four hundred forty-two".