140136577 has 4 divisors (see below), whose sum is σ = 160156096. Its totient is φ = 120117060.

The previous prime is 140136517. The next prime is 140136589. The reversal of 140136577 is 775631041.

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: 775631041 = 1373 ⋅564917.

It is not a de Polignac number, because 140136577 - 2⁷ = 140136449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140136517) 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, 10009749 + ... + 10009762.

It is an arithmetic number, because the mean of its divisors is an integer number (40039024).

Almost surely, 2^140136577 is an apocalyptic number.

It is an amenable number.

140136577 is a deficient number, since it is larger than the sum of its proper divisors (20019519).

140136577 is an equidigital number, since it uses as much as digits as its factorization.

140136577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20019518.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 140136577 is about 11837.9295909378. The cubic root of 140136577 is about 519.4182065613.

The spelling of 140136577 in words is "one hundred forty million, one hundred thirty-six thousand, five hundred seventy-seven".