140124242 has 4 divisors (see below), whose sum is σ = 210186366. Its totient is φ = 70062120.

The previous prime is 140124223. The next prime is 140124253. The reversal of 140124242 is 242421041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242421041 = 167 ⋅1451623.

It can be written as a sum of positive squares in only one way, i.e., 75498721 + 64625521 = 8689^2 + 8039^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35031059 + ... + 35031062.

Almost surely, 2^140124242 is an apocalyptic number.

140124242 is a deficient number, since it is larger than the sum of its proper divisors (70062124).

140124242 is an equidigital number, since it uses as much as digits as its factorization.

140124242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70062123.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 140124242 is about 11837.4085846523. The cubic root of 140124242 is about 519.4029661634.

Adding to 140124242 its reverse (242421041), we get a palindrome (382545283).

The spelling of 140124242 in words is "one hundred forty million, one hundred twenty-four thousand, two hundred forty-two".