1050390 has 48 divisors (see below), whose sum is σ = 2982096. Its totient is φ = 254400.

The previous prime is 1050367. The next prime is 1050391. The reversal of 1050390 is 930501.

It is a super-2 number, since 2×1050390² = 2206638304200, which contains 22 as substring.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1050391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460 + ... + 1520.

It is an arithmetic number, because the mean of its divisors is an integer number (62127).

2^1050390 is an apocalyptic number.

1050390 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 1050390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1491048).

1050390 is an abundant number, since it is smaller than the sum of its proper divisors (1931706).

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

1050390 is a wasteful number, since it uses less digits than its factorization.

1050390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 135, while the sum is 18.

The square root of 1050390 is about 1024.8853594427. The cubic root of 1050390 is about 101.6522180787.

Adding to 1050390 its product of nonzero digits (135), we get a triangular number (1050525 = T₁₄₄₉).

Adding to 1050390 its reverse (930501), we get a palindrome (1980891).

The spelling of 1050390 in words is "one million, fifty thousand, three hundred ninety".