342521443 has 4 divisors (see below), whose sum is σ = 373659768. Its totient is φ = 311383120.

The previous prime is 342521429. The next prime is 342521479. The reversal of 342521443 is 344125243.

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 342521443 - 2⁵ = 342521411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (342521743) 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, 15569146 + ... + 15569167.

It is an arithmetic number, because the mean of its divisors is an integer number (93414942).

Almost surely, 2^342521443 is an apocalyptic number.

342521443 is a deficient number, since it is larger than the sum of its proper divisors (31138325).

342521443 is a wasteful number, since it uses less digits than its factorization.

342521443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31138324.

The product of its digits is 11520, while the sum is 28.

The square root of 342521443 is about 18507.3348432453. The cubic root of 342521443 is about 699.6742994999.

Adding to 342521443 its reverse (344125243), we get a palindrome (686646686).

The spelling of 342521443 in words is "three hundred forty-two million, five hundred twenty-one thousand, four hundred forty-three".