147138142 has 4 divisors (see below), whose sum is σ = 220707216. Its totient is φ = 73569070.

The previous prime is 147138127. The next prime is 147138149. The reversal of 147138142 is 241831741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241831741 = 37 ⋅6535993.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147138149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36784534 + ... + 36784537.

It is an arithmetic number, because the mean of its divisors is an integer number (55176804).

Almost surely, 2^147138142 is an apocalyptic number.

147138142 is a deficient number, since it is larger than the sum of its proper divisors (73569074).

147138142 is an equidigital number, since it uses as much as digits as its factorization.

147138142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73569073.

The product of its digits is 5376, while the sum is 31.

The square root of 147138142 is about 12130.0511952753. The cubic root of 147138142 is about 527.9284773605.

Adding to 147138142 its reverse (241831741), we get a palindrome (388969883).

The spelling of 147138142 in words is "one hundred forty-seven million, one hundred thirty-eight thousand, one hundred forty-two".