124025221 has 4 divisors (see below), whose sum is σ = 127377292. Its totient is φ = 120673152.

The previous prime is 124025219. The next prime is 124025249. The reversal of 124025221 is 122520421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 122520421 = 67 ⋅1828663.

It can be written as a sum of positive squares in 2 ways, for example, as 54552996 + 69472225 = 7386^2 + 8335^2 .

It is a cyclic number.

It is not a de Polignac number, because 124025221 - 2¹ = 124025219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (124025281) 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, 1675980 + ... + 1676053.

It is an arithmetic number, because the mean of its divisors is an integer number (31844323).

Almost surely, 2^124025221 is an apocalyptic number.

It is an amenable number.

124025221 is a deficient number, since it is larger than the sum of its proper divisors (3352071).

124025221 is an equidigital number, since it uses as much as digits as its factorization.

124025221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3352070.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 124025221 is about 11136.6611244125. The cubic root of 124025221 is about 498.6969014855.

Adding to 124025221 its reverse (122520421), we get a palindrome (246545642).

The spelling of 124025221 in words is "one hundred twenty-four million, twenty-five thousand, two hundred twenty-one".