1423535521 has 8 divisors (see below), whose sum is σ = 1463552064. Its totient is φ = 1383600240.

The previous prime is 1423535513. The next prime is 1423535567. The reversal of 1423535521 is 1255353241.

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

It is a cyclic number.

It is not a de Polignac number, because 1423535521 - 2³ = 1423535513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423505521) 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, 16116 + ... + 55738.

It is an arithmetic number, because the mean of its divisors is an integer number (182944008).

Almost surely, 2^1423535521 is an apocalyptic number.

It is an amenable number.

1423535521 is a deficient number, since it is larger than the sum of its proper divisors (40016543).

1423535521 is an equidigital number, since it uses as much as digits as its factorization.

1423535521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40631.

The product of its digits is 18000, while the sum is 31.

The square root of 1423535521 is about 37729.7696918494. The cubic root of 1423535521 is about 1124.9229302924.

Adding to 1423535521 its reverse (1255353241), we get a palindrome (2678888762).

The spelling of 1423535521 in words is "one billion, four hundred twenty-three million, five hundred thirty-five thousand, five hundred twenty-one".