1420231444 has 12 divisors (see below), whose sum is σ = 2486484000. Its totient is φ = 709807448.

The previous prime is 1420231433. The next prime is 1420231447. The reversal of 1420231444 is 4441320241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420231447) 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, 66544 + ... + 85255.

It is an arithmetic number, because the mean of its divisors is an integer number (207207000).

Almost surely, 2^1420231444 is an apocalyptic number.

It is an amenable number.

1420231444 is a deficient number, since it is larger than the sum of its proper divisors (1066252556).

1420231444 is a wasteful number, since it uses less digits than its factorization.

1420231444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154142 (or 154140 counting only the distinct ones).

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

The square root of 1420231444 is about 37685.9581807336. The cubic root of 1420231444 is about 1124.0519272456.

Adding to 1420231444 its reverse (4441320241), we get a palindrome (5861551685).

The spelling of 1420231444 in words is "one billion, four hundred twenty million, two hundred thirty-one thousand, four hundred forty-four".