140004442 has 4 divisors (see below), whose sum is σ = 210006666. Its totient is φ = 70002220.

The previous prime is 140004439. The next prime is 140004443. The reversal of 140004442 is 244400041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 117050761 + 22953681 = 10819^2 + 4791^2 .

It is not an unprimeable number, because it can be changed into a prime (140004443) by changing a digit.

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, 35001109 + ... + 35001112.

Almost surely, 2^140004442 is an apocalyptic number.

140004442 is a deficient number, since it is larger than the sum of its proper divisors (70002224).

140004442 is an equidigital number, since it uses as much as digits as its factorization.

140004442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70002223.

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 140004442 is about 11832.3472734703. The cubic root of 140004442 is about 519.2549018077.

Adding to 140004442 its reverse (244400041), we get a palindrome (384404483).

The spelling of 140004442 in words is "one hundred forty million, four thousand, four hundred forty-two".