1423435521 has 32 divisors (see below), whose sum is σ = 2039184000. Its totient is φ = 880588800.

The previous prime is 1423435511. The next prime is 1423435553. The reversal of 1423435521 is 1255343241.

It is not a de Polignac number, because 1423435521 - 2⁶ = 1423435457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423435501) 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, 557155 + ... + 559703.

It is an arithmetic number, because the mean of its divisors is an integer number (63724500).

Almost surely, 2^1423435521 is an apocalyptic number.

It is an amenable number.

1423435521 is a deficient number, since it is larger than the sum of its proper divisors (615748479).

1423435521 is a wasteful number, since it uses less digits than its factorization.

1423435521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2769.

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

The square root of 1423435521 is about 37728.4444550792. Note that the first 4 decimals coincide. The cubic root of 1423435521 is about 1124.8965886180.

Adding to 1423435521 its reverse (1255343241), we get a palindrome (2678778762).

The spelling of 1423435521 in words is "one billion, four hundred twenty-three million, four hundred thirty-five thousand, five hundred twenty-one".