140078542 has 4 divisors (see below), whose sum is σ = 210117816. Its totient is φ = 70039270.

The previous prime is 140078539. The next prime is 140078551. The reversal of 140078542 is 245870041.

140078542 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: 245870041 = 79 ⋅3112279.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35019634 + ... + 35019637.

It is an arithmetic number, because the mean of its divisors is an integer number (52529454).

Almost surely, 2^140078542 is an apocalyptic number.

140078542 is a deficient number, since it is larger than the sum of its proper divisors (70039274).

140078542 is an equidigital number, since it uses as much as digits as its factorization.

140078542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70039273.

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 140078542 is about 11835.4781061012. The cubic root of 140078542 is about 519.3464941445.

The spelling of 140078542 in words is "one hundred forty million, seventy-eight thousand, five hundred forty-two".