140642265 has 16 divisors (see below), whose sum is σ = 225425088. Its totient is φ = 74876736.

The previous prime is 140642251. The next prime is 140642279. The reversal of 140642265 is 562246041.

It is an interprime number because it is at equal distance from previous prime (140642251) and next prime (140642279).

It is not a de Polignac number, because 140642265 - 2⁵ = 140642233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 819 + ... + 16791.

It is an arithmetic number, because the mean of its divisors is an integer number (14089068).

Almost surely, 2^140642265 is an apocalyptic number.

140642265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

140642265 is a deficient number, since it is larger than the sum of its proper divisors (84782823).

140642265 is a wasteful number, since it uses less digits than its factorization.

140642265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16568.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 140642265 is about 11859.2691596068. The cubic root of 140642265 is about 520.0422364608.

The spelling of 140642265 in words is "one hundred forty million, six hundred forty-two thousand, two hundred sixty-five".