147112642 has 4 divisors (see below), whose sum is σ = 220668966. Its totient is φ = 73556320.

The previous prime is 147112631. The next prime is 147112643. The reversal of 147112642 is 246211741.

It is a Cunningham number, because it is equal to 12129²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 147112641 + 1 = 12129^2 + 1^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 147112642.

It is not an unprimeable number, because it can be changed into a prime (147112643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36778159 + ... + 36778162.

Almost surely, 2^147112642 is an apocalyptic number.

147112642 is a deficient number, since it is larger than the sum of its proper divisors (73556324).

147112642 is an equidigital number, since it uses as much as digits as its factorization.

147112642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73556323.

The product of its digits is 2688, while the sum is 28.

The square root of 147112642 is about 12129.0000412235. Note that the first 4 decimals coincide. The cubic root of 147112642 is about 527.8979777820.

Subtracting 147112642 from its reverse (246211741), we obtain a palindrome (99099099).

The spelling of 147112642 in words is "one hundred forty-seven million, one hundred twelve thousand, six hundred forty-two".