1051940 has 24 divisors (see below), whose sum is σ = 2230200. Its totient is φ = 416768.

The previous prime is 1051927. The next prime is 1051949. The reversal of 1051940 is 491501.

It can be written as a sum of positive squares in 4 ways, for example, as 3364 + 1048576 = 58^2 + 1024^2 .

It is a super-2 number, since 2×1051940² = 2213155527200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (1051949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2804 + ... + 3156.

It is an arithmetic number, because the mean of its divisors is an integer number (92925).

2^1051940 is an apocalyptic number.

1051940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051940 is an abundant number, since it is smaller than the sum of its proper divisors (1178260).

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

1051940 is a wasteful number, since it uses less digits than its factorization.

1051940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1051940 is about 1025.6412628205. The cubic root of 1051940 is about 101.7021942781.

It can be divided in two parts, 1051 and 940, that added together give a palindrome (1991).

The spelling of 1051940 in words is "one million, fifty-one thousand, nine hundred forty".