1142265 has 16 divisors (see below), whose sum is σ = 1840896. Its totient is φ = 604800.

The previous prime is 1142263. The next prime is 1142269. The reversal of 1142265 is 5622411.

It is not a de Polignac number, because 1142265 - 2¹ = 1142263 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3925 + ... + 4205.

It is an arithmetic number, because the mean of its divisors is an integer number (115056).

2^1142265 is an apocalyptic number.

1142265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142265 is a deficient number, since it is larger than the sum of its proper divisors (698631).

1142265 is a wasteful number, since it uses less digits than its factorization.

1142265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560.

The product of its digits is 480, while the sum is 21.

The square root of 1142265 is about 1068.7679823049. The cubic root of 1142265 is about 104.5335316643.

Adding to 1142265 its reverse (5622411), we get a palindrome (6764676).

The spelling of 1142265 in words is "one million, one hundred forty-two thousand, two hundred sixty-five".