142234457 has 4 divisors (see below), whose sum is σ = 144918180. Its totient is φ = 139550736.

The previous prime is 142234447. The next prime is 142234459. The reversal of 142234457 is 754432241.

142234457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 754432241 = 3461 ⋅217981.

It can be written as a sum of positive squares in 2 ways, for example, as 130325056 + 11909401 = 11416^2 + 3451^2 .

It is a cyclic number.

It is not a de Polignac number, because 142234457 - 2⁸ = 142234201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142234459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1341782 + ... + 1341887.

It is an arithmetic number, because the mean of its divisors is an integer number (36229545).

Almost surely, 2^142234457 is an apocalyptic number.

It is an amenable number.

142234457 is a deficient number, since it is larger than the sum of its proper divisors (2683723).

142234457 is an equidigital number, since it uses as much as digits as its factorization.

142234457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2683722.

The product of its digits is 26880, while the sum is 32.

The square root of 142234457 is about 11926.2088276199. The cubic root of 142234457 is about 521.9973197065.

Adding to 142234457 its reverse (754432241), we get a palindrome (896666698).

The spelling of 142234457 in words is "one hundred forty-two million, two hundred thirty-four thousand, four hundred fifty-seven".