140042765 has 8 divisors (see below), whose sum is σ = 168309528. Its totient is φ = 111862080.

The previous prime is 140042759. The next prime is 140042783. The reversal of 140042765 is 567240041.

It can be written as a sum of positive squares in 4 ways, for example, as 5900041 + 134142724 = 2429^2 + 11582^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140042765 - 2¹⁸ = 139780621 is a prime.

It is a super-2 number, since 2×140042765² = 39223952057690450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17882 + ... + 24491.

It is an arithmetic number, because the mean of its divisors is an integer number (21038691).

Almost surely, 2^140042765 is an apocalyptic number.

It is an amenable number.

140042765 is a deficient number, since it is larger than the sum of its proper divisors (28266763).

140042765 is an equidigital number, since it uses as much as digits as its factorization.

140042765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43039.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 140042765 is about 11833.9665793005. The cubic root of 140042765 is about 519.3022755194.

The spelling of 140042765 in words is "one hundred forty million, forty-two thousand, seven hundred sixty-five".