1281057 has 8 divisors (see below), whose sum is σ = 1718976. Its totient is φ = 848592.

The previous prime is 1281047. The next prime is 1281083. The reversal of 1281057 is 7501821.

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

It is not a de Polignac number, because 1281057 - 2⁴ = 1281041 is a prime.

It is a super-2 number, since 2×1281057² = 3282214074498, which contains 22 as substring.

1281057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1281047) 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, 778 + ... + 1779.

It is an arithmetic number, because the mean of its divisors is an integer number (214872).

2^1281057 is an apocalyptic number.

It is an amenable number.

1281057 is a deficient number, since it is larger than the sum of its proper divisors (437919).

1281057 is a wasteful number, since it uses less digits than its factorization.

1281057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1281057 is about 1131.8378859183. The cubic root of 1281057 is about 108.6065833099.

Adding to 1281057 its reverse (7501821), we get a palindrome (8782878).

The spelling of 1281057 in words is "one million, two hundred eighty-one thousand, fifty-seven".