1071940 has 12 divisors (see below), whose sum is σ = 2251116. Its totient is φ = 428768.

The previous prime is 1071937. The next prime is 1071943. The reversal of 1071940 is 491701.

1071940 is nontrivially palindromic in base 8.

It is an interprime number because it is at equal distance from previous prime (1071937) and next prime (1071943).

It can be written as a sum of positive squares in 2 ways, for example, as 719104 + 352836 = 848^2 + 594^2 .

It is a super-2 number, since 2×1071940² = 2298110727200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1071943) 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, 26779 + ... + 26818.

It is an arithmetic number, because the mean of its divisors is an integer number (187593).

2^1071940 is an apocalyptic number.

1071940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1071940 is an abundant number, since it is smaller than the sum of its proper divisors (1179176).

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

1071940 is a wasteful number, since it uses less digits than its factorization.

1071940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53606 (or 53604 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 22.

The square root of 1071940 is about 1035.3453530103. The cubic root of 1071940 is about 102.3426894885.

It can be divided in two parts, 10 and 71940, that multiplied together give a triangular number (719400 = T₁₁₉₉).

The spelling of 1071940 in words is "one million, seventy-one thousand, nine hundred forty".