1071245 has 16 divisors (see below), whose sum is σ = 1486848. Its totient is φ = 725760.

The previous prime is 1071241. The next prime is 1071253. The reversal of 1071245 is 5421701.

It is not a de Polignac number, because 1071245 - 2² = 1071241 is a prime.

It is a super-2 number, since 2×1071245² = 2295131700050, 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 (1071241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4325 + ... + 4565.

It is an arithmetic number, because the mean of its divisors is an integer number (92928).

2^1071245 is an apocalyptic number.

It is an amenable number.

1071245 is a deficient number, since it is larger than the sum of its proper divisors (415603).

1071245 is a wasteful number, since it uses less digits than its factorization.

1071245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380.

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 1071245 is about 1035.0096617907. The cubic root of 1071245 is about 102.3205665006.

Subtracting from 1071245 its sum of digits (20), we obtain a square (1071225 = 1035²).

Adding to 1071245 its reverse (5421701), we get a palindrome (6492946).

The spelling of 1071245 in words is "one million, seventy-one thousand, two hundred forty-five".