142207747 has 4 divisors (see below), whose sum is σ = 155135736. Its totient is φ = 129279760.

The previous prime is 142207739. The next prime is 142207763. The reversal of 142207747 is 747702241.

It is a happy number.

142207747 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 142207747 - 2³ = 142207739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142207717) 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, 6463978 + ... + 6463999.

It is an arithmetic number, because the mean of its divisors is an integer number (38783934).

Almost surely, 2^142207747 is an apocalyptic number.

142207747 is a deficient number, since it is larger than the sum of its proper divisors (12927989).

142207747 is a wasteful number, since it uses less digits than its factorization.

142207747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927988.

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 142207747 is about 11925.0889724144. The cubic root of 142207747 is about 521.9646426241.

Adding to 142207747 its reverse (747702241), we get a palindrome (889909988).

The spelling of 142207747 in words is "one hundred forty-two million, two hundred seven thousand, seven hundred forty-seven".