1420340553 has 18 divisors (see below), whose sum is σ = 2063921886. Its totient is φ = 941241792.

The previous prime is 1420340549. The next prime is 1420340567. The reversal of 1420340553 is 3550430241.

1420340553 is a `hidden beast` number, since 1 + 4 + 203 + 405 + 53 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 829267209 + 591073344 = 28797^2 + 24312^2 .

It is not a de Polignac number, because 1420340553 - 2² = 1420340549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420340533) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 266725 + ... + 271997.

It is an arithmetic number, because the mean of its divisors is an integer number (114662327).

Almost surely, 2^1420340553 is an apocalyptic number.

It is an amenable number.

1420340553 is a deficient number, since it is larger than the sum of its proper divisors (643581333).

1420340553 is an equidigital number, since it uses as much as digits as its factorization.

1420340553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5625 (or 5449 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 1420340553 is about 37687.4057610762. The cubic root of 1420340553 is about 1124.0807115309.

Adding to 1420340553 its reverse (3550430241), we get a palindrome (4970770794).

It can be divided in two parts, 14203 and 40553, that added together give a square (54756 = 234²).

The spelling of 1420340553 in words is "one billion, four hundred twenty million, three hundred forty thousand, five hundred fifty-three".