1253360043 has 24 divisors (see below), whose sum is σ = 1974365120. Its totient is φ = 761529600.

The previous prime is 1253360027. The next prime is 1253360051. The reversal of 1253360043 is 3400633521.

It is a happy number.

1253360043 is a `hidden beast` number, since 1 + 2 + 53 + 3 + 600 + 4 + 3 = 666.

It is not a de Polignac number, because 1253360043 - 2⁴ = 1253360027 is a prime.

It is a super-2 number, since 2×1253360043² = 3141822794777923698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1253359989 and 1253360016.

It is not an unprimeable number, because it can be changed into a prime (1253360093) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58558 + ... + 77043.

Almost surely, 2^1253360043 is an apocalyptic number.

1253360043 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1253360043 is a deficient number, since it is larger than the sum of its proper divisors (721005077).

1253360043 is a wasteful number, since it uses less digits than its factorization.

1253360043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135699 (or 135696 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 1253360043 is about 35402.8253533528. The cubic root of 1253360043 is about 1078.1816805689.

Adding to 1253360043 its reverse (3400633521), we get a palindrome (4653993564).

The spelling of 1253360043 in words is "one billion, two hundred fifty-three million, three hundred sixty thousand, forty-three".