142447800746 has 4 divisors (see below), whose sum is σ = 213671701122. Its totient is φ = 71223900372.

The previous prime is 142447800721. The next prime is 142447800773. The reversal of 142447800746 is 647008744241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 647008744241 = 23 ⋅28130814967.

It can be written as a sum of positive squares in only one way, i.e., 71321577721 + 71126223025 = 267061^2 + 266695^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 142447800746.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35611950185 + ... + 35611950188.

Almost surely, 2^142447800746 is an apocalyptic number.

142447800746 is a deficient number, since it is larger than the sum of its proper divisors (71223900376).

142447800746 is an equidigital number, since it uses as much as digits as its factorization.

142447800746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71223900375.

The product of its (nonzero) digits is 1204224, while the sum is 47.

The spelling of 142447800746 in words is "one hundred forty-two billion, four hundred forty-seven million, eight hundred thousand, seven hundred forty-six".