1265306141 has 16 divisors (see below), whose sum is σ = 1463417280. Its totient is φ = 1081217280.

The previous prime is 1265306113. The next prime is 1265306167. The reversal of 1265306141 is 1416035621.

It is a happy number.

It is not a de Polignac number, because 1265306141 - 2¹⁴ = 1265289757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265306111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156695 + ... + 164571.

It is an arithmetic number, because the mean of its divisors is an integer number (91463580).

Almost surely, 2^1265306141 is an apocalyptic number.

1265306141 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1265306141 is a deficient number, since it is larger than the sum of its proper divisors (198111139).

1265306141 is a wasteful number, since it uses less digits than its factorization.

1265306141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8764.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1265306141 is about 35571.1419692987. The cubic root of 1265306141 is about 1081.5963307417.

It can be divided in two parts, 1265 and 306141, that multiplied together give a triangular number (387268365 = T₂₇₈₃₀).

The spelling of 1265306141 in words is "one billion, two hundred sixty-five million, three hundred six thousand, one hundred forty-one".