140424266 has 4 divisors (see below), whose sum is σ = 210636402. Its totient is φ = 70212132.

The previous prime is 140424259. The next prime is 140424313. The reversal of 140424266 is 662424041.

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: 662424041 = 347 ⋅1909003.

It can be written as a sum of positive squares in only one way, i.e., 108264025 + 32160241 = 10405^2 + 5671^2 .

It is an unprimeable number.

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, 35106065 + ... + 35106068.

Almost surely, 2^140424266 is an apocalyptic number.

140424266 is a deficient number, since it is larger than the sum of its proper divisors (70212136).

140424266 is an equidigital number, since it uses as much as digits as its factorization.

140424266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70212135.

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 140424266 is about 11850.0745145337. The cubic root of 140424266 is about 519.7734047248.

The spelling of 140424266 in words is "one hundred forty million, four hundred twenty-four thousand, two hundred sixty-six".