140223542 has 4 divisors (see below), whose sum is σ = 210335316. Its totient is φ = 70111770.

The previous prime is 140223541. The next prime is 140223547. The reversal of 140223542 is 245322041.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140223541) 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, 35055884 + ... + 35055887.

It is an arithmetic number, because the mean of its divisors is an integer number (52583829).

Almost surely, 2^140223542 is an apocalyptic number.

140223542 is a deficient number, since it is larger than the sum of its proper divisors (70111774).

140223542 is an equidigital number, since it uses as much as digits as its factorization.

140223542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70111773.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 140223542 is about 11841.6021720036. The cubic root of 140223542 is about 519.5256300109.

Adding to 140223542 its reverse (245322041), we get a palindrome (385545583).

The spelling of 140223542 in words is "one hundred forty million, two hundred twenty-three thousand, five hundred forty-two".