142130525 has 6 divisors (see below), whose sum is σ = 176241882. Its totient is φ = 113704400.

The previous prime is 142130519. The next prime is 142130539. The reversal of 142130525 is 525031241.

It can be written as a sum of positive squares in 3 ways, for example, as 21548164 + 120582361 = 4642^2 + 10981^2 .

It is not a de Polignac number, because 142130525 - 2¹⁰ = 142129501 is a prime.

It is a super-2 number, since 2×142130525² = 40402172273551250, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 142130525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2842586 + ... + 2842635.

It is an arithmetic number, because the mean of its divisors is an integer number (29373647).

Almost surely, 2^142130525 is an apocalyptic number.

It is an amenable number.

142130525 is a deficient number, since it is larger than the sum of its proper divisors (34111357).

142130525 is an equidigital number, since it uses as much as digits as its factorization.

142130525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5685231 (or 5685226 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 142130525 is about 11921.8507371968. The cubic root of 142130525 is about 521.8701460100.

Adding to 142130525 its reverse (525031241), we get a palindrome (667161766).

The spelling of 142130525 in words is "one hundred forty-two million, one hundred thirty thousand, five hundred twenty-five".