1052390 has 8 divisors (see below), whose sum is σ = 1894320. Its totient is φ = 420952.

The previous prime is 1052333. The next prime is 1052413. The reversal of 1052390 is 932501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1052390² = 2215049424200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52610 + ... + 52629.

It is an arithmetic number, because the mean of its divisors is an integer number (236790).

2^1052390 is an apocalyptic number.

1052390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1052390 is a deficient number, since it is larger than the sum of its proper divisors (841930).

1052390 is a wasteful number, since it uses less digits than its factorization.

1052390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105246.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1052390 is about 1025.8606143137. The cubic root of 1052390 is about 101.7166943012.

Adding to 1052390 its reverse (932501), we get a palindrome (1984891).

The spelling of 1052390 in words is "one million, fifty-two thousand, three hundred ninety".