142092257 has 4 divisors (see below), whose sum is σ = 146992020. Its totient is φ = 137192496.

The previous prime is 142092217. The next prime is 142092259. The reversal of 142092257 is 752290241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 752290241 = 1481 ⋅507961.

It can be written as a sum of positive squares in 2 ways, for example, as 43507216 + 98585041 = 6596^2 + 9929^2 .

It is a cyclic number.

It is not a de Polignac number, because 142092257 - 2¹⁰ = 142091233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142092259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2449838 + ... + 2449895.

It is an arithmetic number, because the mean of its divisors is an integer number (36748005).

Almost surely, 2^142092257 is an apocalyptic number.

It is an amenable number.

142092257 is a deficient number, since it is larger than the sum of its proper divisors (4899763).

142092257 is an equidigital number, since it uses as much as digits as its factorization.

142092257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899762.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 142092257 is about 11920.2456769984. The cubic root of 142092257 is about 521.8233047483.

The spelling of 142092257 in words is "one hundred forty-two million, ninety-two thousand, two hundred fifty-seven".