124378081 has 4 divisors (see below), whose sum is σ = 125327664. Its totient is φ = 123428500.

The previous prime is 124378061. The next prime is 124378091. The reversal of 124378081 is 180873421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180873421 = 17 ⋅10639613.

It is a cyclic number.

It is not a de Polignac number, because 124378081 - 2⁵ = 124378049 is a prime.

It is a super-2 number, since 2×124378081² = 30939814066485122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (124378021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 474595 + ... + 474856.

It is an arithmetic number, because the mean of its divisors is an integer number (31331916).

Almost surely, 2^124378081 is an apocalyptic number.

It is an amenable number.

124378081 is a deficient number, since it is larger than the sum of its proper divisors (949583).

124378081 is an equidigital number, since it uses as much as digits as its factorization.

124378081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 949582.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 124378081 is about 11152.4921430145. The cubic root of 124378081 is about 499.1693956235.

The spelling of 124378081 in words is "one hundred twenty-four million, three hundred seventy-eight thousand, eighty-one".