1071423240 has 128 divisors (see below), whose sum is σ = 3341952000. Its totient is φ = 274498560.

The previous prime is 1071423211. The next prime is 1071423257. The reversal of 1071423240 is 423241701.

It is a happy number.

It is a super-2 number, since 2×1071423240² = 2295895518424195200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1071423240.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 553314 + ... + 555246.

It is an arithmetic number, because the mean of its divisors is an integer number (26109000).

Almost surely, 2^1071423240 is an apocalyptic number.

1071423240 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 1071423240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1670976000).

1071423240 is an abundant number, since it is smaller than the sum of its proper divisors (2270528760).

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

1071423240 is a wasteful number, since it uses less digits than its factorization.

1071423240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2127 (or 2123 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 1071423240 is about 32732.6020963809. The cubic root of 1071423240 is about 1023.2624108369.

Adding to 1071423240 its reverse (423241701), we get a palindrome (1494664941).

The spelling of 1071423240 in words is "one billion, seventy-one million, four hundred twenty-three thousand, two hundred forty".