1452020423 has 4 divisors (see below), whose sum is σ = 1659451920. Its totient is φ = 1244588928.

The previous prime is 1452020407. The next prime is 1452020441. The reversal of 1452020423 is 3240202541.

It is a happy number.

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 1452020423 - 2⁴ = 1452020407 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452020483) 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, 103715738 + ... + 103715751.

It is an arithmetic number, because the mean of its divisors is an integer number (414862980).

Almost surely, 2^1452020423 is an apocalyptic number.

1452020423 is a deficient number, since it is larger than the sum of its proper divisors (207431497).

1452020423 is an equidigital number, since it uses as much as digits as its factorization.

1452020423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207431496.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1452020423 is about 38105.3857479491. The cubic root of 1452020423 is about 1132.3766573108.

Adding to 1452020423 its reverse (3240202541), we get a palindrome (4692222964).

It can be divided in two parts, 14520 and 20423, that added together give a palindrome (34943).

The spelling of 1452020423 in words is "one billion, four hundred fifty-two million, twenty thousand, four hundred twenty-three".