1052340240 has 80 divisors (see below), whose sum is σ = 3728297088. Its totient is φ = 240534528.

The previous prime is 1052340217. The next prime is 1052340241. The reversal of 1052340240 is 420432501.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1052340240² = 2214839961446515200, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1052340241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 311517 + ... + 314876.

Almost surely, 2^1052340240 is an apocalyptic number.

1052340240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1052340240 is an abundant number, since it is smaller than the sum of its proper divisors (2675956848).

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

1052340240 is a wasteful number, since it uses less digits than its factorization.

1052340240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626416 (or 626410 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 1052340240 is about 32439.7940807275. The cubic root of 1052340240 is about 1017.1509112419.

Adding to 1052340240 its reverse (420432501), we get a palindrome (1472772741).

The spelling of 1052340240 in words is "one billion, fifty-two million, three hundred forty thousand, two hundred forty".