1056147 has 4 divisors (see below), whose sum is σ = 1408200. Its totient is φ = 704096.

The previous prime is 1056113. The next prime is 1056149. The reversal of 1056147 is 7416501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7416501 = 3 ⋅2472167.

It is a cyclic number.

It is not a de Polignac number, because 1056147 - 2⁷ = 1056019 is a prime.

It is a super-2 number, since 2×1056147² = 2230892971218, which contains 22 as substring.

It is a D-number.

It is an alternating number because its digits alternate between odd and even.

1056147 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1056149) 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, 176022 + ... + 176027.

It is an arithmetic number, because the mean of its divisors is an integer number (352050).

2^1056147 is an apocalyptic number.

1056147 is a deficient number, since it is larger than the sum of its proper divisors (352053).

1056147 is an equidigital number, since it uses as much as digits as its factorization.

1056147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352052.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1056147 is about 1027.6901283947. The cubic root of 1056147 is about 101.8375923733.

The spelling of 1056147 in words is "one million, fifty-six thousand, one hundred forty-seven".