1238161 has 8 divisors (see below), whose sum is σ = 1321704. Its totient is φ = 1155840.

The previous prime is 1238137. The next prime is 1238177. The reversal of 1238161 is 1618321.

It can be written as a sum of positive squares in 4 ways, for example, as 207936 + 1030225 = 456^2 + 1015^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1238161 - 2⁵ = 1238129 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2731 + ... + 3151.

It is an arithmetic number, because the mean of its divisors is an integer number (165213).

2^1238161 is an apocalyptic number.

It is an amenable number.

1238161 is a deficient number, since it is larger than the sum of its proper divisors (83543).

1238161 is a wasteful number, since it uses less digits than its factorization.

1238161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611.

The product of its digits is 288, while the sum is 22.

The square root of 1238161 is about 1112.7268308080. The cubic root of 1238161 is about 107.3805704489.

The spelling of 1238161 in words is "one million, two hundred thirty-eight thousand, one hundred sixty-one".