1270738247 has 6 divisors (see below), whose sum is σ = 1326166152. Its totient is φ = 1215325232.

The previous prime is 1270738243. The next prime is 1270738303. The reversal of 1270738247 is 7428370721.

It is not a de Polignac number, because 1270738247 - 2² = 1270738243 is a prime.

It is a super-2 number, since 2×1270738247² = 3229551384777266018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1270738243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 167243 + ... + 174675.

It is an arithmetic number, because the mean of its divisors is an integer number (221027692).

Almost surely, 2^1270738247 is an apocalyptic number.

1270738247 is a deficient number, since it is larger than the sum of its proper divisors (55427905).

1270738247 is an frugal number, since it uses more digits than its factorization.

1270738247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14889 (or 7456 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 41.

The square root of 1270738247 is about 35647.4157127834. The cubic root of 1270738247 is about 1083.1419271990.

The spelling of 1270738247 in words is "one billion, two hundred seventy million, seven hundred thirty-eight thousand, two hundred forty-seven".