142791025 has 12 divisors (see below), whose sum is σ = 190681372. Its totient is φ = 105445440.

The previous prime is 142791001. The next prime is 142791031. The reversal of 142791025 is 520197241.

142791025 = 105² + 106² + ... + 754².

It can be written as a sum of positive squares in 6 ways, for example, as 53450721 + 89340304 = 7311^2 + 9452^2 .

It is not a de Polignac number, because 142791025 - 2⁷ = 142790897 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, 219354 + ... + 220003.

Almost surely, 2^142791025 is an apocalyptic number.

It is an amenable number.

142791025 is a deficient number, since it is larger than the sum of its proper divisors (47890347).

142791025 is a wasteful number, since it uses less digits than its factorization.

142791025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439380 (or 439375 counting only the distinct ones).

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

The square root of 142791025 is about 11949.5198648314. The cubic root of 142791025 is about 522.6772976454.

The spelling of 142791025 in words is "one hundred forty-two million, seven hundred ninety-one thousand, twenty-five".