1238147 has 4 divisors (see below), whose sum is σ = 1240536. Its totient is φ = 1235760.

The previous prime is 1238137. The next prime is 1238177. The reversal of 1238147 is 7418321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7418321 = 239 ⋅31039.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1238147 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 (1238137) 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, 53 + ... + 1574.

It is an arithmetic number, because the mean of its divisors is an integer number (310134).

2^1238147 is an apocalyptic number.

1238147 is a deficient number, since it is larger than the sum of its proper divisors (2389).

1238147 is an equidigital number, since it uses as much as digits as its factorization.

1238147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388.

The product of its digits is 1344, while the sum is 26.

The square root of 1238147 is about 1112.7205399380. The cubic root of 1238147 is about 107.3801657267.

The spelling of 1238147 in words is "one million, two hundred thirty-eight thousand, one hundred forty-seven".