140100442 has 4 divisors (see below), whose sum is σ = 210150666. Its totient is φ = 70050220.

The previous prime is 140100427. The next prime is 140100449. The reversal of 140100442 is 244001041.

140100442 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 244001041 = 29 ⋅8413829.

It can be written as a sum of positive squares in only one way, i.e., 112126921 + 27973521 = 10589^2 + 5289^2 .

It is not an unprimeable number, because it can be changed into a prime (140100449) 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, 35025109 + ... + 35025112.

Almost surely, 2^140100442 is an apocalyptic number.

140100442 is a deficient number, since it is larger than the sum of its proper divisors (70050224).

140100442 is an equidigital number, since it uses as much as digits as its factorization.

140100442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70050223.

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 140100442 is about 11836.4032543674. The cubic root of 140100442 is about 519.3735577604.

Adding to 140100442 its reverse (244001041), we get a palindrome (384101483).

The spelling of 140100442 in words is "one hundred forty million, one hundred thousand, four hundred forty-two".