142130320 has 40 divisors (see below), whose sum is σ = 339391224. Its totient is φ = 55314432.

The previous prime is 142130309. The next prime is 142130321. The reversal of 142130320 is 23031241.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18386944 + 123743376 = 4288^2 + 11124^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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 = 142130294 and 142130303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142130321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21049 + ... + 26968.

Almost surely, 2^142130320 is an apocalyptic number.

142130320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142130320 is an abundant number, since it is smaller than the sum of its proper divisors (197260904).

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

142130320 is a wasteful number, since it uses less digits than its factorization.

142130320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48067 (or 48061 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 142130320 is about 11921.8421395353. The cubic root of 142130320 is about 521.8698951059.

Adding to 142130320 its reverse (23031241), we get a palindrome (165161561).

The spelling of 142130320 in words is "one hundred forty-two million, one hundred thirty thousand, three hundred twenty".