1267952047 has 4 divisors (see below), whose sum is σ = 1268098776. Its totient is φ = 1267805320.

The previous prime is 1267952029. The next prime is 1267952057. The reversal of 1267952047 is 7402597621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7402597621 = 5227 ⋅1416223.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1267952047 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1267951994 and 1267952012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267952057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59533 + ... + 77974.

It is an arithmetic number, because the mean of its divisors is an integer number (317024694).

Almost surely, 2^1267952047 is an apocalyptic number.

1267952047 is a deficient number, since it is larger than the sum of its proper divisors (146729).

1267952047 is an equidigital number, since it uses as much as digits as its factorization.

1267952047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146728.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 1267952047 is about 35608.3142959618. The cubic root of 1267952047 is about 1082.3497214700.

The spelling of 1267952047 in words is "one billion, two hundred sixty-seven million, nine hundred fifty-two thousand, forty-seven".