142520143530 has 32 divisors (see below), whose sum is σ = 345434969088. Its totient is φ = 37629080000.

The previous prime is 142520143523. The next prime is 142520143531. The reversal of 142520143530 is 35341025241.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (142520143531) 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, 23515146 + ... + 23521205.

It is an arithmetic number, because the mean of its divisors is an integer number (10794842784).

Almost surely, 2^142520143530 is an apocalyptic number.

142520143530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142520143530 is an abundant number, since it is smaller than the sum of its proper divisors (202914825558).

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

142520143530 is a wasteful number, since it uses less digits than its factorization.

142520143530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47036462.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 142520143530 its reverse (35341025241), we get a palindrome (177861168771).

The spelling of 142520143530 in words is "one hundred forty-two billion, five hundred twenty million, one hundred forty-three thousand, five hundred thirty".