142240043 has 4 divisors (see below), whose sum is σ = 155170968. Its totient is φ = 129309120.

The previous prime is 142240039. The next prime is 142240103. The reversal of 142240043 is 340042241.

142240043 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.

It is a cyclic number.

It is not a de Polignac number, because 142240043 - 2² = 142240039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142239997 and 142240024.

It is not an unprimeable number, because it can be changed into a prime (142240643) 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, 6465446 + ... + 6465467.

It is an arithmetic number, because the mean of its divisors is an integer number (38792742).

Almost surely, 2^142240043 is an apocalyptic number.

142240043 is a deficient number, since it is larger than the sum of its proper divisors (12930925).

142240043 is a wasteful number, since it uses less digits than its factorization.

142240043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12930924.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 142240043 is about 11926.4430154175. The cubic root of 142240043 is about 522.0041531160.

Adding to 142240043 its reverse (340042241), we get a palindrome (482282284).

The spelling of 142240043 in words is "one hundred forty-two million, two hundred forty thousand, forty-three".