147428546 has 4 divisors (see below), whose sum is σ = 221142822. Its totient is φ = 73714272.

The previous prime is 147428513. The next prime is 147428569. The reversal of 147428546 is 645824741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 645824741 = 12799 ⋅50459.

It can be written as a sum of positive squares in only one way, i.e., 116748025 + 30680521 = 10805^2 + 5539^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36857135 + ... + 36857138.

Almost surely, 2^147428546 is an apocalyptic number.

147428546 is a deficient number, since it is larger than the sum of its proper divisors (73714276).

147428546 is an equidigital number, since it uses as much as digits as its factorization.

147428546 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73714275.

The product of its digits is 215040, while the sum is 41.

The square root of 147428546 is about 12142.0157305120. The cubic root of 147428546 is about 528.2755702046.

The spelling of 147428546 in words is "one hundred forty-seven million, four hundred twenty-eight thousand, five hundred forty-six".