1421135553 has 32 divisors (see below), whose sum is σ = 2076624000. Its totient is φ = 860820480.

The previous prime is 1421135539. The next prime is 1421135557. The reversal of 1421135553 is 3555311241.

It is not a de Polignac number, because 1421135553 - 2¹⁰ = 1421134529 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1421135553.

It is not an unprimeable number, because it can be changed into a prime (1421135557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 244323 + ... + 250071.

It is an arithmetic number, because the mean of its divisors is an integer number (64894500).

Almost surely, 2^1421135553 is an apocalyptic number.

It is an amenable number.

1421135553 is a deficient number, since it is larger than the sum of its proper divisors (655488447).

1421135553 is a wasteful number, since it uses less digits than its factorization.

1421135553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5937.

The product of its digits is 9000, while the sum is 30.

The square root of 1421135553 is about 37697.9515756493. The cubic root of 1421135553 is about 1124.2903977417.

Adding to 1421135553 its reverse (3555311241), we get a palindrome (4976446794).

The spelling of 1421135553 in words is "one billion, four hundred twenty-one million, one hundred thirty-five thousand, five hundred fifty-three".