147280642 has 4 divisors (see below), whose sum is σ = 220920966. Its totient is φ = 73640320.

The previous prime is 147280621. The next prime is 147280667. The reversal of 147280642 is 246082741.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246082741 = 47 ⋅5235803.

It can be written as a sum of positive squares in only one way, i.e., 125462401 + 21818241 = 11201^2 + 4671^2 .

It is a junction number, because it is equal to n+sod(n) for n = 147280598 and 147280607.

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, 36820159 + ... + 36820162.

Almost surely, 2^147280642 is an apocalyptic number.

147280642 is a deficient number, since it is larger than the sum of its proper divisors (73640324).

147280642 is an equidigital number, since it uses as much as digits as its factorization.

147280642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73640323.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 147280642 is about 12135.9236154485. The cubic root of 147280642 is about 528.0988513459.

The spelling of 147280642 in words is "one hundred forty-seven million, two hundred eighty thousand, six hundred forty-two".