1042345 has 4 divisors (see below), whose sum is σ = 1250820. Its totient is φ = 833872.

The previous prime is 1042333. The next prime is 1042357. The reversal of 1042345 is 5432401.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1042333) and next prime (1042357).

It can be written as a sum of positive squares in 2 ways, for example, as 760384 + 281961 = 872^2 + 531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042345 - 2¹⁹ = 518057 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104230 + ... + 104239.

It is an arithmetic number, because the mean of its divisors is an integer number (312705).

2^1042345 is an apocalyptic number.

It is an amenable number.

1042345 is a deficient number, since it is larger than the sum of its proper divisors (208475).

1042345 is an equidigital number, since it uses as much as digits as its factorization.

1042345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208474.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1042345 is about 1020.9529861850. The cubic root of 1042345 is about 101.3920325402.

Adding to 1042345 its reverse (5432401), we get a palindrome (6474746).

The spelling of 1042345 in words is "one million, forty-two thousand, three hundred forty-five".