1421122523 has 4 divisors (see below), whose sum is σ = 1454171928. Its totient is φ = 1388073120.

The previous prime is 1421122471. The next prime is 1421122543. The reversal of 1421122523 is 3252211241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1421122523 - 2²⁴ = 1404345307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1421122543) 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, 16524638 + ... + 16524723.

It is an arithmetic number, because the mean of its divisors is an integer number (363542982).

Almost surely, 2^1421122523 is an apocalyptic number.

1421122523 is a deficient number, since it is larger than the sum of its proper divisors (33049405).

1421122523 is an equidigital number, since it uses as much as digits as its factorization.

1421122523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33049404.

The product of its digits is 960, while the sum is 23.

The square root of 1421122523 is about 37697.7787541919. The cubic root of 1421122523 is about 1124.2869616283.

Adding to 1421122523 its reverse (3252211241), we get a palindrome (4673333764).

The spelling of 1421122523 in words is "one billion, four hundred twenty-one million, one hundred twenty-two thousand, five hundred twenty-three".