140254368409 has 4 divisors (see below), whose sum is σ = 140263652880. Its totient is φ = 140245083940.

The previous prime is 140254368367. The next prime is 140254368451. The reversal of 140254368409 is 904863452041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 904863452041 = 673 ⋅1344522217.

It is an interprime number because it is at equal distance from previous prime (140254368367) and next prime (140254368451).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140254368409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140254398409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4619539 + ... + 4649800.

It is an arithmetic number, because the mean of its divisors is an integer number (35065913220).

Almost surely, 2^140254368409 is an apocalyptic number.

It is an amenable number.

140254368409 is a deficient number, since it is larger than the sum of its proper divisors (9284471).

140254368409 is an equidigital number, since it uses as much as digits as its factorization.

140254368409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284470.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 140254368409 in words is "one hundred forty billion, two hundred fifty-four million, three hundred sixty-eight thousand, four hundred nine".