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BaseRepresentation
bin11110011001001001
320022202201
4132121021
512440424
62400201
71025641
oct363111
9208681
10124489
1185592
1260061
1344881
1433521
1526d44
hex1e649

124489 has 2 divisors, whose sum is σ = 124490. Its totient is φ = 124488.

The previous prime is 124477. The next prime is 124493. The reversal of 124489 is 984421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81225 + 43264 = 285^2 + 208^2 .

It is an emirp because it is prime and its reverse (984421) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-124489 is a prime.

It is a super-2 number, since 2×1244892 = 30995022242, which contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (124429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62244 + 62245.

It is an arithmetic number, because the mean of its divisors is an integer number (62245).

2124489 is an apocalyptic number.

It is an amenable number.

124489 is a deficient number, since it is larger than the sum of its proper divisors (1).

124489 is an equidigital number, since it uses as much as digits as its factorization.

124489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 28.

The square root of 124489 is about 352.8299873877. The cubic root of 124489 is about 49.9317736122.

The spelling of 124489 in words is "one hundred twenty-four thousand, four hundred eighty-nine".