140872549 has 2 divisors, whose sum is σ = 140872550. Its totient is φ = 140872548.

The previous prime is 140872547. The next prime is 140872559. The reversal of 140872549 is 945278041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132664324 + 8208225 = 11518^2 + 2865^2 .

It is a cyclic number.

It is not a de Polignac number, because 140872549 - 2¹ = 140872547 is a prime.

Together with 140872547, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140872547) by changing a digit.

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, 70436274 + 70436275.

It is an arithmetic number, because the mean of its divisors is an integer number (70436275).

Almost surely, 2^140872549 is an apocalyptic number.

It is an amenable number.

140872549 is a deficient number, since it is larger than the sum of its proper divisors (1).

140872549 is an equidigital number, since it uses as much as digits as its factorization.

140872549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 140872549 is about 11868.9742185245. The cubic root of 140872549 is about 520.3259162475.

The spelling of 140872549 in words is "one hundred forty million, eight hundred seventy-two thousand, five hundred forty-nine".