1253138 has 8 divisors (see below), whose sum is σ = 1990332. Its totient is φ = 589696.

The previous prime is 1253137. The next prime is 1253167. The reversal of 1253138 is 8313521.

It can be written as a sum of positive squares in 2 ways, for example, as 1203409 + 49729 = 1097^2 + 223^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1253137) 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, 18395 + ... + 18462.

2^1253138 is an apocalyptic number.

1253138 is a deficient number, since it is larger than the sum of its proper divisors (737194).

1253138 is a wasteful number, since it uses less digits than its factorization.

1253138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36876.

The product of its digits is 720, while the sum is 23.

The square root of 1253138 is about 1119.4364653700. The cubic root of 1253138 is about 107.8118007236.

Adding to 1253138 its reverse (8313521), we get a palindrome (9566659).

The spelling of 1253138 in words is "one million, two hundred fifty-three thousand, one hundred thirty-eight".