142097728 has 14 divisors (see below), whose sum is σ = 281975306. Its totient is φ = 71048832.

The previous prime is 142097719. The next prime is 142097737. The reversal of 142097728 is 827790241.

142097728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (142097719) and next prime (142097737).

It can be written as a sum of positive squares in only one way, i.e., 86266944 + 55830784 = 9288^2 + 7472^2 .

It is a congruent 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, 1110075 + ... + 1110202.

Almost surely, 2^142097728 is an apocalyptic number.

It is an amenable number.

142097728 is a deficient number, since it is larger than the sum of its proper divisors (139877578).

142097728 is an equidigital number, since it uses as much as digits as its factorization.

142097728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220289 (or 2220279 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 142097728 is about 11920.4751583148. The cubic root of 142097728 is about 521.8300019433.

The spelling of 142097728 in words is "one hundred forty-two million, ninety-seven thousand, seven hundred twenty-eight".