1042290 has 48 divisors (see below), whose sum is σ = 2792088. Its totient is φ = 269568.

The previous prime is 1042273. The next prime is 1042309. The reversal of 1042290 is 922401.

It can be written as a sum of positive squares in 4 ways, for example, as 720801 + 321489 = 849^2 + 567^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3174 + ... + 3486.

2^1042290 is an apocalyptic number.

1042290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1042290, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396044).

1042290 is an abundant number, since it is smaller than the sum of its proper divisors (1749798).

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

1042290 is a wasteful number, since it uses less digits than its factorization.

1042290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1042290 is about 1020.9260502113. The cubic root of 1042290 is about 101.3902491703.

Adding to 1042290 its reverse (922401), we get a palindrome (1964691).

The spelling of 1042290 in words is "one million, forty-two thousand, two hundred ninety".