142120047 has 4 divisors (see below), whose sum is σ = 189493400. Its totient is φ = 94746696.

The previous prime is 142120037. The next prime is 142120049. The reversal of 142120047 is 740021241.

It is a happy number.

142120047 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 not a de Polignac number, because 142120047 - 2²³ = 133731439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142120049) 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, 23686672 + ... + 23686677.

It is an arithmetic number, because the mean of its divisors is an integer number (47373350).

Almost surely, 2^142120047 is an apocalyptic number.

142120047 is a deficient number, since it is larger than the sum of its proper divisors (47373353).

142120047 is an equidigital number, since it uses as much as digits as its factorization.

142120047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47373352.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 142120047 is about 11921.4112839043. The cubic root of 142120047 is about 521.8573214373.

Adding to 142120047 its reverse (740021241), we get a palindrome (882141288).

The spelling of 142120047 in words is "one hundred forty-two million, one hundred twenty thousand, forty-seven".