124209425 has 12 divisors (see below), whose sum is σ = 154157916. Its totient is φ = 99278400.

The previous prime is 124209419. The next prime is 124209431. The reversal of 124209425 is 524902421.

It is an interprime number because it is at equal distance from previous prime (124209419) and next prime (124209431).

It can be written as a sum of positive squares in 6 ways, for example, as 1420864 + 122788561 = 1192^2 + 11081^2 .

It is not a de Polignac number, because 124209425 - 2¹² = 124205329 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54407 + ... + 56643.

It is an arithmetic number, because the mean of its divisors is an integer number (12846493).

Almost surely, 2^124209425 is an apocalyptic number.

It is an amenable number.

124209425 is a deficient number, since it is larger than the sum of its proper divisors (29948491).

124209425 is a wasteful number, since it uses less digits than its factorization.

124209425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4468 (or 4463 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 124209425 is about 11144.9282187011. The cubic root of 124209425 is about 498.9436699050.

The spelling of 124209425 in words is "one hundred twenty-four million, two hundred nine thousand, four hundred twenty-five".