1273977047 has 8 divisors (see below), whose sum is σ = 1506180000. Its totient is φ = 1054325664.

The previous prime is 1273976993. The next prime is 1273977049. The reversal of 1273977047 is 7407793721.

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

It is not a de Polignac number, because 1273977047 - 2⁶ = 1273976983 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1273976992 and 1273977010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273977049) 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, 3137672 + ... + 3138077.

It is an arithmetic number, because the mean of its divisors is an integer number (188272500).

Almost surely, 2^1273977047 is an apocalyptic number.

1273977047 is a deficient number, since it is larger than the sum of its proper divisors (232202953).

1273977047 is an equidigital number, since it uses as much as digits as its factorization.

1273977047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6275785.

The product of its (nonzero) digits is 518616, while the sum is 47.

The square root of 1273977047 is about 35692.8150612977. The cubic root of 1273977047 is about 1084.0613675016.

The spelling of 1273977047 in words is "one billion, two hundred seventy-three million, nine hundred seventy-seven thousand, forty-seven".