1253378 has 8 divisors (see below), whose sum is σ = 2148672. Its totient is φ = 537156.

The previous prime is 1253377. The next prime is 1253381. The reversal of 1253378 is 8733521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1253378.

It is not an unprimeable number, because it can be changed into a prime (1253377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44750 + ... + 44777.

It is an arithmetic number, because the mean of its divisors is an integer number (268584).

2^1253378 is an apocalyptic number.

1253378 is a deficient number, since it is larger than the sum of its proper divisors (895294).

1253378 is an equidigital number, since it uses as much as digits as its factorization.

1253378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89536.

The product of its digits is 5040, while the sum is 29.

The square root of 1253378 is about 1119.5436570317. The cubic root of 1253378 is about 107.8186829612.

Adding to 1253378 its reverse (8733521), we get a palindrome (9986899).

The spelling of 1253378 in words is "one million, two hundred fifty-three thousand, three hundred seventy-eight".