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BaseRepresentation
bin101010010100110…
…1001000010100000
310122222100202002102
41110221221002200
510402032432034
6352531505532
750123343014
oct12451510240
93588322072
101420202144
11669737989
123377582a8
13198302bca
14d6890544
1584a3597e
hex54a690a0

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, 21420202144 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".