142320534 has 24 divisors (see below), whose sum is σ = 287719848. Its totient is φ = 46932480.

The previous prime is 142320533. The next prime is 142320539. The reversal of 142320534 is 435023241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142320533) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 55194 + ... + 57714.

It is an arithmetic number, because the mean of its divisors is an integer number (11988327).

Almost surely, 2^142320534 is an apocalyptic number.

142320534 is an abundant number, since it is smaller than the sum of its proper divisors (145399314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142320534 is an equidigital number, since it uses as much as digits as its factorization.

142320534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2720 (or 2623 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 142320534 is about 11929.8170145229. The cubic root of 142320534 is about 522.1025987023.

Adding to 142320534 its reverse (435023241), we get a palindrome (577343775).

The spelling of 142320534 in words is "one hundred forty-two million, three hundred twenty thousand, five hundred thirty-four".