1051520340 has 96 divisors (see below), whose sum is σ = 3179998080. Its totient is φ = 258080256.

The previous prime is 1051520339. The next prime is 1051520357. The reversal of 1051520340 is 430251501.

It is a super-2 number, since 2×1051520340² = 2211390050867431200, which contains 22 as substring.

It is a congruent number.

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, 293842 + ... + 297398.

It is an arithmetic number, because the mean of its divisors is an integer number (33124980).

Almost surely, 2^1051520340 is an apocalyptic number.

1051520340 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 1051520340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589999040).

1051520340 is an abundant number, since it is smaller than the sum of its proper divisors (2128477740).

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

1051520340 is a wasteful number, since it uses less digits than its factorization.

1051520340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3961 (or 3959 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1051520340 is about 32427.1543617382. The cubic root of 1051520340 is about 1016.8866815185.

Adding to 1051520340 its reverse (430251501), we get a palindrome (1481771841).

The spelling of 1051520340 in words is "one billion, fifty-one million, five hundred twenty thousand, three hundred forty".