124542421 has 8 divisors (see below), whose sum is σ = 127661184. Its totient is φ = 121452240.

The previous prime is 124542409. The next prime is 124542437. The reversal of 124542421 is 124245421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 124542421 - 2²¹ = 122445269 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 (124542721) 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 7 ways as a sum of consecutive naturals, for example, 1816 + ... + 15886.

It is an arithmetic number, because the mean of its divisors is an integer number (15957648).

Almost surely, 2^124542421 is an apocalyptic number.

It is an amenable number.

124542421 is a deficient number, since it is larger than the sum of its proper divisors (3118763).

124542421 is a wasteful number, since it uses less digits than its factorization.

124542421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14291.

The product of its digits is 2560, while the sum is 25.

The square root of 124542421 is about 11159.8575707757. The cubic root of 124542421 is about 499.3891486919.

Adding to 124542421 its reverse (124245421), we get a palindrome (248787842).

The spelling of 124542421 in words is "one hundred twenty-four million, five hundred forty-two thousand, four hundred twenty-one".