1071199840 has 24 divisors (see below), whose sum is σ = 2530710000. Its totient is φ = 428479872.

The previous prime is 1071199771. The next prime is 1071199859. The reversal of 1071199840 is 489911701.

It is a super-2 number, since 2×1071199840² = 2294938194432051200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 1071199793 and 1071199802.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3347340 + ... + 3347659.

It is an arithmetic number, because the mean of its divisors is an integer number (105446250).

Almost surely, 2^1071199840 is an apocalyptic number.

1071199840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1071199840 is an abundant number, since it is smaller than the sum of its proper divisors (1459510160).

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

1071199840 is an equidigital number, since it uses as much as digits as its factorization.

1071199840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6695014 (or 6695006 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 40.

The square root of 1071199840 is about 32729.1894186214. The cubic root of 1071199840 is about 1023.1912865280.

The spelling of 1071199840 in words is "one billion, seventy-one million, one hundred ninety-nine thousand, eight hundred forty".