1440212434 has 4 divisors (see below), whose sum is σ = 2160318654. Its totient is φ = 720106216.

The previous prime is 1440212381. The next prime is 1440212437. The reversal of 1440212434 is 4342120441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4342120441 = 3847 ⋅1128703.

It can be written as a sum of positive squares in only one way, i.e., 1274704209 + 165508225 = 35703^2 + 12865^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1440212399 and 1440212408.

It is not an unprimeable number, because it can be changed into a prime (1440212437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 360053107 + ... + 360053110.

Almost surely, 2^1440212434 is an apocalyptic number.

1440212434 is a deficient number, since it is larger than the sum of its proper divisors (720106220).

1440212434 is an equidigital number, since it uses as much as digits as its factorization.

1440212434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720106219.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1440212434 is about 37950.1308825148. The cubic root of 1440212434 is about 1129.2987619401.

Adding to 1440212434 its reverse (4342120441), we get a palindrome (5782332875).

The spelling of 1440212434 in words is "one billion, four hundred forty million, two hundred twelve thousand, four hundred thirty-four".