142040320 has 36 divisors (see below), whose sum is σ = 340234020. Its totient is φ = 56815616.

The previous prime is 142040303. The next prime is 142040323. The reversal of 142040320 is 23040241.

It can be written as a sum of positive squares in 2 ways, for example, as 33547264 + 108493056 = 5792^2 + 10416^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 142040294 and 142040303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142040323) 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, 54205 + ... + 56764.

It is an arithmetic number, because the mean of its divisors is an integer number (9450945).

Almost surely, 2^142040320 is an apocalyptic number.

142040320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142040320 is an abundant number, since it is smaller than the sum of its proper divisors (198193700).

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

142040320 is an equidigital number, since it uses as much as digits as its factorization.

142040320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110990 (or 110976 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 142040320 is about 11918.0669573551. The cubic root of 142040320 is about 521.7597187367.

Adding to 142040320 its reverse (23040241), we get a palindrome (165080561).

The spelling of 142040320 in words is "one hundred forty-two million, forty thousand, three hundred twenty".