265139141 has 4 divisors (see below), whose sum is σ = 274281900. Its totient is φ = 255996384.

The previous prime is 265139111. The next prime is 265139143. The reversal of 265139141 is 141931562.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97436641 + 167702500 = 9871^2 + 12950^2 .

It is a cyclic number.

It is not a de Polignac number, because 265139141 - 2²² = 260944837 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 265139098 and 265139107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265139143) 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, 4571336 + ... + 4571393.

It is an arithmetic number, because the mean of its divisors is an integer number (68570475).

Almost surely, 2^265139141 is an apocalyptic number.

It is an amenable number.

265139141 is a deficient number, since it is larger than the sum of its proper divisors (9142759).

265139141 is an equidigital number, since it uses as much as digits as its factorization.

265139141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9142758.

The product of its digits is 6480, while the sum is 32.

The square root of 265139141 is about 16283.0937171043. The cubic root of 265139141 is about 642.4282273837.

The spelling of 265139141 in words is "two hundred sixty-five million, one hundred thirty-nine thousand, one hundred forty-one".