140173142 has 4 divisors (see below), whose sum is σ = 210259716. Its totient is φ = 70086570.

The previous prime is 140173093. The next prime is 140173151. The reversal of 140173142 is 241371041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 241371041 = 19 ⋅12703739.

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, 35043284 + ... + 35043287.

It is an arithmetic number, because the mean of its divisors is an integer number (52564929).

Almost surely, 2^140173142 is an apocalyptic number.

140173142 is a deficient number, since it is larger than the sum of its proper divisors (70086574).

140173142 is an equidigital number, since it uses as much as digits as its factorization.

140173142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70086573.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 140173142 is about 11839.4738903382. The cubic root of 140173142 is about 519.4633788627.

The spelling of 140173142 in words is "one hundred forty million, one hundred seventy-three thousand, one hundred forty-two".