1352021423 has 4 divisors (see below), whose sum is σ = 1352173368. Its totient is φ = 1351869480.

The previous prime is 1352021413. The next prime is 1352021431. The reversal of 1352021423 is 3241202531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1352021423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1352021413) 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, 61736 + ... + 80717.

It is an arithmetic number, because the mean of its divisors is an integer number (338043342).

Almost surely, 2^1352021423 is an apocalyptic number.

1352021423 is a deficient number, since it is larger than the sum of its proper divisors (151945).

1352021423 is an equidigital number, since it uses as much as digits as its factorization.

1352021423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151944.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1352021423 is about 36769.8439349421. The cubic root of 1352021423 is about 1105.7608030867.

Adding to 1352021423 its reverse (3241202531), we get a palindrome (4593223954).

It can be divided in two parts, 13520 and 21423, that added together give a palindrome (34943).

The spelling of 1352021423 in words is "one billion, three hundred fifty-two million, twenty-one thousand, four hundred twenty-three".