1272262078 has 16 divisors (see below), whose sum is σ = 2019363840. Its totient is φ = 599491800.

The previous prime is 1272262073. The next prime is 1272262087. The reversal of 1272262078 is 8702622721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272262073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80388 + ... + 94903.

It is an arithmetic number, because the mean of its divisors is an integer number (126210240).

Almost surely, 2^1272262078 is an apocalyptic number.

1272262078 is a deficient number, since it is larger than the sum of its proper divisors (747101762).

1272262078 is a wasteful number, since it uses less digits than its factorization.

1272262078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175503.

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 1272262078 is about 35668.7829621365. The cubic root of 1272262078 is about 1083.5747113006.

Adding to 1272262078 its reverse (8702622721), we get a palindrome (9974884799).

The spelling of 1272262078 in words is "one billion, two hundred seventy-two million, two hundred sixty-two thousand, seventy-eight".