1265077142 has 16 divisors (see below), whose sum is σ = 2262995712. Its totient is φ = 518602920.

The previous prime is 1265077111. The next prime is 1265077147. The reversal of 1265077142 is 2417705621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1265077147) 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 7 ways as a sum of consecutive naturals, for example, 1964084 + ... + 1964727.

It is an arithmetic number, because the mean of its divisors is an integer number (141437232).

Almost surely, 2^1265077142 is an apocalyptic number.

1265077142 is a deficient number, since it is larger than the sum of its proper divisors (997918570).

1265077142 is a wasteful number, since it uses less digits than its factorization.

1265077142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3928843.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 1265077142 is about 35567.9229362638. The cubic root of 1265077142 is about 1081.5310765939.

The spelling of 1265077142 in words is "one billion, two hundred sixty-five million, seventy-seven thousand, one hundred forty-two".