1071903240 has 128 divisors (see below), whose sum is σ = 3761136000. Its totient is φ = 270791424.

The previous prime is 1071903233. The next prime is 1071903257. The reversal of 1071903240 is 423091701.

It is a super-2 number, since 2×1071903240² = 2297953111844995200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 31 ways as a sum of consecutive naturals, for example, 5599 + ... + 46638.

It is an arithmetic number, because the mean of its divisors is an integer number (29383875).

Almost surely, 2^1071903240 is an apocalyptic number.

1071903240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1071903240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880568000).

1071903240 is an abundant number, since it is smaller than the sum of its proper divisors (2689232760).

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

1071903240 is a wasteful number, since it uses less digits than its factorization.

1071903240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52276 (or 52266 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1071903240 is about 32739.9334147154. The cubic root of 1071903240 is about 1023.4151959702.

Adding to 1071903240 its reverse (423091701), we get a palindrome (1494994941).

The spelling of 1071903240 in words is "one billion, seventy-one million, nine hundred three thousand, two hundred forty".