1420048145 has 4 divisors (see below), whose sum is σ = 1704057780. Its totient is φ = 1136038512.

The previous prime is 1420048141. The next prime is 1420048151. The reversal of 1420048145 is 5418400241.

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

It can be written as a sum of positive squares in 2 ways, for example, as 870427009 + 549621136 = 29503^2 + 23444^2 .

It is a cyclic number.

It is not a de Polignac number, because 1420048145 - 2² = 1420048141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1420048141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142004810 + ... + 142004819.

It is an arithmetic number, because the mean of its divisors is an integer number (426014445).

Almost surely, 2^1420048145 is an apocalyptic number.

It is an amenable number.

1420048145 is a deficient number, since it is larger than the sum of its proper divisors (284009635).

1420048145 is an equidigital number, since it uses as much as digits as its factorization.

1420048145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284009634.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 1420048145 is about 37683.5261752400. The cubic root of 1420048145 is about 1124.0035674144.

Adding to 1420048145 its reverse (5418400241), we get a palindrome (6838448386).

The spelling of 1420048145 in words is "one billion, four hundred twenty million, forty-eight thousand, one hundred forty-five".