140279545 has 32 divisors (see below), whose sum is σ = 199406592. Its totient is φ = 92740032.

The previous prime is 140279539. The next prime is 140279549. The reversal of 140279545 is 545972041.

It is not a de Polignac number, because 140279545 - 2¹¹ = 140277497 is a prime.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (140279549) by changing a digit.

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 in 31 ways as a sum of consecutive naturals, for example, 124354 + ... + 125476.

It is an arithmetic number, because the mean of its divisors is an integer number (6231456).

Almost surely, 2^140279545 is an apocalyptic number.

It is an amenable number.

140279545 is a deficient number, since it is larger than the sum of its proper divisors (59127047).

140279545 is a wasteful number, since it uses less digits than its factorization.

140279545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 140279545 is about 11843.9666075179. The cubic root of 140279545 is about 519.5947841651.

The spelling of 140279545 in words is "one hundred forty million, two hundred seventy-nine thousand, five hundred forty-five".