142520145 has 16 divisors (see below), whose sum is σ = 228782400. Its totient is φ = 75760704.

The previous prime is 142520143. The next prime is 142520171. The reversal of 142520145 is 541025241.

It is not a de Polignac number, because 142520145 - 2¹ = 142520143 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142520143) 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, 10870 + ... + 20079.

It is an arithmetic number, because the mean of its divisors is an integer number (14298900).

Almost surely, 2^142520145 is an apocalyptic number.

142520145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142520145 is a deficient number, since it is larger than the sum of its proper divisors (86262255).

142520145 is a wasteful number, since it uses less digits than its factorization.

142520145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31264.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 142520145 is about 11938.1801376927. The cubic root of 142520145 is about 522.3465755285.

Adding to 142520145 its reverse (541025241), we get a palindrome (683545386).

The spelling of 142520145 in words is "one hundred forty-two million, five hundred twenty thousand, one hundred forty-five".