142322520 has 64 divisors (see below), whose sum is σ = 428652000. Its totient is φ = 37803008.

The previous prime is 142322513. The next prime is 142322527. The reversal of 142322520 is 25223241.

It is an interprime number because it is at equal distance from previous prime (142322513) and next prime (142322527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142322527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30076 + ... + 34484.

Almost surely, 2^142322520 is an apocalyptic number.

142322520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142322520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214326000).

142322520 is an abundant number, since it is smaller than the sum of its proper divisors (286329480).

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

142322520 is a wasteful number, since it uses less digits than its factorization.

142322520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4692 (or 4688 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 142322520 is about 11929.9002510499. The cubic root of 142322520 is about 522.1050272367.

Adding to 142322520 its reverse (25223241), we get a palindrome (167545761).

The spelling of 142322520 in words is "one hundred forty-two million, three hundred twenty-two thousand, five hundred twenty".