142540718 has 4 divisors (see below), whose sum is σ = 213811080. Its totient is φ = 71270358.

The previous prime is 142540711. The next prime is 142540721. The reversal of 142540718 is 817045241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 817045241 = 6113 ⋅133657.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142540711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35635178 + ... + 35635181.

It is an arithmetic number, because the mean of its divisors is an integer number (53452770).

Almost surely, 2^142540718 is an apocalyptic number.

142540718 is a deficient number, since it is larger than the sum of its proper divisors (71270362).

142540718 is an equidigital number, since it uses as much as digits as its factorization.

142540718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71270361.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 142540718 is about 11939.0417538427. The cubic root of 142540718 is about 522.3717081605.

Adding to 142540718 its reverse (817045241), we get a palindrome (959585959).

The spelling of 142540718 in words is "one hundred forty-two million, five hundred forty thousand, seven hundred eighteen".