1423421553 has 8 divisors (see below), whose sum is σ = 1917461728. Its totient is φ = 939164544.

The previous prime is 1423421533. The next prime is 1423421557. The reversal of 1423421553 is 3551243241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1423421553 - 2¹⁴ = 1423405169 is a prime.

It is a super-2 number, since 2×1423421553² = 4052257835089863618, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1423421553.

It is not an unprimeable number, because it can be changed into a prime (1423421557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2445451 + ... + 2446032.

It is an arithmetic number, because the mean of its divisors is an integer number (239682716).

Almost surely, 2^1423421553 is an apocalyptic number.

It is an amenable number.

1423421553 is a deficient number, since it is larger than the sum of its proper divisors (494040175).

1423421553 is an equidigital number, since it uses as much as digits as its factorization.

1423421553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4891583.

The product of its digits is 14400, while the sum is 30.

The square root of 1423421553 is about 37728.2593423020. The cubic root of 1423421553 is about 1124.8929091148.

Adding to 1423421553 its reverse (3551243241), we get a palindrome (4974664794).

The spelling of 1423421553 in words is "one billion, four hundred twenty-three million, four hundred twenty-one thousand, five hundred fifty-three".