1042815 has 16 divisors (see below), whose sum is σ = 1756800. Its totient is φ = 526752.

The previous prime is 1042799. The next prime is 1042819. The reversal of 1042815 is 5182401.

1042815 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 1042815 - 2⁴ = 1042799 is a prime.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 1042791 and 1042800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042819) 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, 1545 + ... + 2114.

It is an arithmetic number, because the mean of its divisors is an integer number (109800).

2^1042815 is an apocalyptic number.

1042815 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1042815 is a deficient number, since it is larger than the sum of its proper divisors (713985).

1042815 is a wasteful number, since it uses less digits than its factorization.

1042815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3686.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 1042815 is about 1021.1831373461. The cubic root of 1042815 is about 101.4072696880.

The spelling of 1042815 in words is "one million, forty-two thousand, eight hundred fifteen".