142197025 has 12 divisors (see below), whose sum is σ = 178809984. Its totient is φ = 112154000.

The previous prime is 142197019. The next prime is 142197047. The reversal of 142197025 is 520791241.

It is not a de Polignac number, because 142197025 - 2¹⁵ = 142164257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38281 + ... + 41830.

It is an arithmetic number, because the mean of its divisors is an integer number (14900832).

Almost surely, 2^142197025 is an apocalyptic number.

It is an amenable number.

142197025 is a deficient number, since it is larger than the sum of its proper divisors (36612959).

142197025 is an equidigital number, since it uses as much as digits as its factorization.

142197025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80192 (or 80187 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 142197025 is about 11924.6394075460. The cubic root of 142197025 is about 521.9515241508.

The spelling of 142197025 in words is "one hundred forty-two million, one hundred ninety-seven thousand, twenty-five".