1420202144 has 12 divisors (see below), whose sum is σ = 2796023034. Its totient is φ = 710101056.

The previous prime is 1420202141. The next prime is 1420202159. The reversal of 1420202144 is 4412020241.

It can be written as a sum of positive squares in only one way, i.e., 1418275600 + 1926544 = 37660^2 + 1388^2 .

It is not an unprimeable number, because it can be changed into a prime (1420202141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22190627 + ... + 22190690.

Almost surely, 2^1420202144 is an apocalyptic number.

It is an amenable number.

1420202144 is a deficient number, since it is larger than the sum of its proper divisors (1375820890).

1420202144 is an equidigital number, since it uses as much as digits as its factorization.

1420202144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44381327 (or 44381319 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1420202144 is about 37685.5694397736. The cubic root of 1420202144 is about 1124.0441972970.

Adding to 1420202144 its reverse (4412020241), we get a palindrome (5832222385).

The spelling of 1420202144 in words is "one billion, four hundred twenty million, two hundred two thousand, one hundred forty-four".