1355138 has 8 divisors (see below), whose sum is σ = 2152332. Its totient is φ = 637696.

The previous prime is 1355131. The next prime is 1355153. The reversal of 1355138 is 8315531.

It can be written as a sum of positive squares in 2 ways, for example, as 1087849 + 267289 = 1043^2 + 517^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1355131) 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, 19895 + ... + 19962.

2^1355138 is an apocalyptic number.

1355138 is a deficient number, since it is larger than the sum of its proper divisors (797194).

1355138 is a wasteful number, since it uses less digits than its factorization.

1355138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39876.

The product of its digits is 1800, while the sum is 26.

The square root of 1355138 is about 1164.1039472487. The cubic root of 1355138 is about 110.6609789661.

The spelling of 1355138 in words is "one million, three hundred fifty-five thousand, one hundred thirty-eight".