140463506 has 4 divisors (see below), whose sum is σ = 210695262. Its totient is φ = 70231752.

The previous prime is 140463487. The next prime is 140463517. The reversal of 140463506 is 605364041.

It is a happy number.

140463506 is digitally balanced in base 2, 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: 605364041 = 15817 ⋅38273.

It can be written as a sum of positive squares in only one way, i.e., 135512881 + 4950625 = 11641^2 + 2225^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35115875 + ... + 35115878.

Almost surely, 2^140463506 is an apocalyptic number.

140463506 is a deficient number, since it is larger than the sum of its proper divisors (70231756).

140463506 is an equidigital number, since it uses as much as digits as its factorization.

140463506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70231755.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 140463506 is about 11851.7300846754. The cubic root of 140463506 is about 519.8218151824.

The spelling of 140463506 in words is "one hundred forty million, four hundred sixty-three thousand, five hundred six".