1042940 has 12 divisors (see below), whose sum is σ = 2190216. Its totient is φ = 417168.

The previous prime is 1042931. The next prime is 1042949. The reversal of 1042940 is 492401.

It is an interprime number because it is at equal distance from previous prime (1042931) and next prime (1042949).

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 52147 = 1042940 / (1 + 0 + 4 + 2 + 9 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26054 + ... + 26093.

It is an arithmetic number, because the mean of its divisors is an integer number (182518).

2^1042940 is an apocalyptic number.

1042940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042940 is an abundant number, since it is smaller than the sum of its proper divisors (1147276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042940 is a wasteful number, since it uses less digits than its factorization.

1042940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52156 (or 52154 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1042940 is about 1021.2443390296. The cubic root of 1042940 is about 101.4113213502.

The spelling of 1042940 in words is "one million, forty-two thousand, nine hundred forty".