1047257427 has 4 divisors (see below), whose sum is σ = 1396343240. Its totient is φ = 698171616.

The previous prime is 1047257423. The next prime is 1047257429. The reversal of 1047257427 is 7247527401.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1047257427 - 2² = 1047257423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1047257423) 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, 174542902 + ... + 174542907.

It is an arithmetic number, because the mean of its divisors is an integer number (349085810).

Almost surely, 2^1047257427 is an apocalyptic number.

1047257427 is a deficient number, since it is larger than the sum of its proper divisors (349085813).

1047257427 is an equidigital number, since it uses as much as digits as its factorization.

1047257427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349085812.

The product of its (nonzero) digits is 109760, while the sum is 39.

The square root of 1047257427 is about 32361.3570018317. The cubic root of 1047257427 is about 1015.5106515041.

The spelling of 1047257427 in words is "one billion, forty-seven million, two hundred fifty-seven thousand, four hundred twenty-seven".