140312434 has 4 divisors (see below), whose sum is σ = 210468654. Its totient is φ = 70156216.

The previous prime is 140312423. The next prime is 140312449. The reversal of 140312434 is 434213041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 434213041 = 5711 ⋅76031.

It can be written as a sum of positive squares in only one way, i.e., 119836809 + 20475625 = 10947^2 + 4525^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35078107 + ... + 35078110.

Almost surely, 2^140312434 is an apocalyptic number.

140312434 is a deficient number, since it is larger than the sum of its proper divisors (70156220).

140312434 is an equidigital number, since it uses as much as digits as its factorization.

140312434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70156219.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 140312434 is about 11845.3549545803. The cubic root of 140312434 is about 519.6353878932.

Adding to 140312434 its reverse (434213041), we get a palindrome (574525475).

The spelling of 140312434 in words is "one hundred forty million, three hundred twelve thousand, four hundred thirty-four".