1051143240 has 256 divisors, whose sum is σ = 3855237120. Its totient is φ = 224040960.

The previous prime is 1051143229. The next prime is 1051143253. The reversal of 1051143240 is 423411501.

1051143240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1051143240² = 2209804221995395200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 791457 + ... + 792783.

It is an arithmetic number, because the mean of its divisors is an integer number (15059520).

Almost surely, 2^1051143240 is an apocalyptic number.

1051143240 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 1051143240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1927618560).

1051143240 is an abundant number, since it is smaller than the sum of its proper divisors (2804093880).

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

1051143240 is a wasteful number, since it uses less digits than its factorization.

1051143240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1412 (or 1408 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 1051143240 is about 32421.3392690678. The cubic root of 1051143240 is about 1016.7651071332.

Adding to 1051143240 its reverse (423411501), we get a palindrome (1474554741).

The spelling of 1051143240 in words is "one billion, fifty-one million, one hundred forty-three thousand, two hundred forty".