1273955955 has 8 divisors (see below), whose sum is σ = 2038329552. Its totient is φ = 679443168.

The previous prime is 1273955953. The next prime is 1273955959. The reversal of 1273955955 is 5595593721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1273955955 - 2¹ = 1273955953 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1273955898 and 1273955907.

It is not an unprimeable number, because it can be changed into a prime (1273955951) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42465184 + ... + 42465213.

It is an arithmetic number, because the mean of its divisors is an integer number (254791194).

Almost surely, 2^1273955955 is an apocalyptic number.

1273955955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1273955955 is a deficient number, since it is larger than the sum of its proper divisors (764373597).

1273955955 is an equidigital number, since it uses as much as digits as its factorization.

1273955955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84930405.

The product of its digits is 2126250, while the sum is 51.

The square root of 1273955955 is about 35692.5195944472. The cubic root of 1273955955 is about 1084.0553848850.

The spelling of 1273955955 in words is "one billion, two hundred seventy-three million, nine hundred fifty-five thousand, nine hundred fifty-five".