142240525 has 24 divisors (see below), whose sum is σ = 202110080. Its totient is φ = 97277760.

The previous prime is 142240519. The next prime is 142240577. The reversal of 142240525 is 525042241.

142240525 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142240525 - 2¹¹ = 142238477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 142240525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 84391 + ... + 86059.

Almost surely, 2^142240525 is an apocalyptic number.

It is an amenable number.

142240525 is a deficient number, since it is larger than the sum of its proper divisors (59869555).

142240525 is a wasteful number, since it uses less digits than its factorization.

142240525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2173 (or 2168 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 142240525 is about 11926.4632225987. The cubic root of 142240525 is about 522.0047427430.

Adding to 142240525 its reverse (525042241), we get a palindrome (667282766).

The spelling of 142240525 in words is "one hundred forty-two million, two hundred forty thousand, five hundred twenty-five".