1042855 has 16 divisors (see below), whose sum is σ = 1390464. Its totient is φ = 744480.

The previous prime is 1042849. The next prime is 1042861. The reversal of 1042855 is 5582401.

It is an interprime number because it is at equal distance from previous prime (1042849) and next prime (1042861).

It is not a de Polignac number, because 1042855 - 2¹¹ = 1040807 is a prime.

It is an Ulam number.

It is a Duffinian number.

1042855 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3544 + ... + 3826.

It is an arithmetic number, because the mean of its divisors is an integer number (86904).

2^1042855 is an apocalyptic number.

1042855 is a deficient number, since it is larger than the sum of its proper divisors (347609).

1042855 is a wasteful number, since it uses less digits than its factorization.

1042855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1042855 is about 1021.2027222839. The cubic root of 1042855 is about 101.4085662551.

The spelling of 1042855 in words is "one million, forty-two thousand, eight hundred fifty-five".