1023145 has 8 divisors (see below), whose sum is σ = 1300104. Its totient is φ = 770304.

The previous prime is 1023133. The next prime is 1023163. The reversal of 1023145 is 5413201.

It can be written as a sum of positive squares in 4 ways, for example, as 15129 + 1008016 = 123^2 + 1004^2 .

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

It is not a de Polignac number, because 1023145 - 2⁹ = 1022633 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5934 + ... + 6103.

It is an arithmetic number, because the mean of its divisors is an integer number (162513).

2^1023145 is an apocalyptic number.

It is an amenable number.

1023145 is a deficient number, since it is larger than the sum of its proper divisors (276959).

1023145 is a wasteful number, since it uses less digits than its factorization.

1023145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12059.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 1023145 is about 1011.5063025014. The cubic root of 1023145 is about 100.7656232506.

Adding to 1023145 its reverse (5413201), we get a palindrome (6436346).

The spelling of 1023145 in words is "one million, twenty-three thousand, one hundred forty-five".