1423540533 has 4 divisors (see below), whose sum is σ = 1898054048. Its totient is φ = 949027020.

The previous prime is 1423540523. The next prime is 1423540537. The reversal of 1423540533 is 3350453241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3350453241 = 3 ⋅1116817747.

It is not a de Polignac number, because 1423540533 - 2¹² = 1423536437 is a prime.

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 1423540533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423540537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237256753 + ... + 237256758.

It is an arithmetic number, because the mean of its divisors is an integer number (474513512).

Almost surely, 2^1423540533 is an apocalyptic number.

It is an amenable number.

1423540533 is a deficient number, since it is larger than the sum of its proper divisors (474513515).

1423540533 is an equidigital number, since it uses as much as digits as its factorization.

1423540533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474513514.

The product of its (nonzero) digits is 21600, while the sum is 30.

The square root of 1423540533 is about 37729.8361114914. The cubic root of 1423540533 is about 1124.9242505046.

Adding to 1423540533 its reverse (3350453241), we get a palindrome (4773993774).

The spelling of 1423540533 in words is "one billion, four hundred twenty-three million, five hundred forty thousand, five hundred thirty-three".