142428577 has 4 divisors (see below), whose sum is σ = 146278036. Its totient is φ = 138579120.

The previous prime is 142428563. The next prime is 142428607. The reversal of 142428577 is 775824241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 775824241 = 1733 ⋅447677.

It can be written as a sum of positive squares in 2 ways, for example, as 69906321 + 72522256 = 8361^2 + 8516^2 .

It is a cyclic number.

It is not a de Polignac number, because 142428577 - 2¹⁵ = 142395809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142428677) 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, 1924674 + ... + 1924747.

It is an arithmetic number, because the mean of its divisors is an integer number (36569509).

Almost surely, 2^142428577 is an apocalyptic number.

It is an amenable number.

142428577 is a deficient number, since it is larger than the sum of its proper divisors (3849459).

142428577 is an equidigital number, since it uses as much as digits as its factorization.

142428577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849458.

The product of its digits is 125440, while the sum is 40.

The square root of 142428577 is about 11934.3444310947. The cubic root of 142428577 is about 522.2346837946.

The spelling of 142428577 in words is "one hundred forty-two million, four hundred twenty-eight thousand, five hundred seventy-seven".