142440014 has 4 divisors (see below), whose sum is σ = 213660024. Its totient is φ = 71220006.

The previous prime is 142440013. The next prime is 142440031. The reversal of 142440014 is 410044241.

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: 410044241 = 71 ⋅5775271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142440013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35610002 + ... + 35610005.

It is an arithmetic number, because the mean of its divisors is an integer number (53415006).

Almost surely, 2^142440014 is an apocalyptic number.

142440014 is a deficient number, since it is larger than the sum of its proper divisors (71220010).

142440014 is an equidigital number, since it uses as much as digits as its factorization.

142440014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71220009.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 142440014 is about 11934.8235847875. The cubic root of 142440014 is about 522.2486618842.

Adding to 142440014 its reverse (410044241), we get a palindrome (552484255).

The spelling of 142440014 in words is "one hundred forty-two million, four hundred forty thousand, fourteen".