1253386040 has 16 divisors (see below), whose sum is σ = 2820118680. Its totient is φ = 501354400.

The previous prime is 1253386033. The next prime is 1253386049. The reversal of 1253386040 is 406833521.

It is a junction number, because it is equal to n+sod(n) for n = 1253385988 and 1253386006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253386049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15667286 + ... + 15667365.

Almost surely, 2^1253386040 is an apocalyptic number.

1253386040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1253386040 is an abundant number, since it is smaller than the sum of its proper divisors (1566732640).

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

1253386040 is a wasteful number, since it uses less digits than its factorization.

1253386040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31334662 (or 31334658 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 1253386040 is about 35403.1925114106. The cubic root of 1253386040 is about 1078.1891350099.

The spelling of 1253386040 in words is "one billion, two hundred fifty-three million, three hundred eighty-six thousand, forty".