24542421 has 16 divisors (see below), whose sum is σ = 34007040. Its totient is φ = 15726960.

The previous prime is 24542417. The next prime is 24542429. The reversal of 24542421 is 12424542.

It is a happy number.

It is not a de Polignac number, because 24542421 - 2² = 24542417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24542391 and 24542400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24542429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14350 + ... + 15968.

It is an arithmetic number, because the mean of its divisors is an integer number (2125440).

Almost surely, 2^24542421 is an apocalyptic number.

It is an amenable number.

24542421 is a deficient number, since it is larger than the sum of its proper divisors (9464619).

24542421 is a wasteful number, since it uses less digits than its factorization.

24542421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1816.

The product of its digits is 2560, while the sum is 24.

The square root of 24542421 is about 4954.0307831099. The cubic root of 24542421 is about 290.6068189343.

Adding to 24542421 its reverse (12424542), we get a palindrome (36966963).

The spelling of 24542421 in words is "twenty-four million, five hundred forty-two thousand, four hundred twenty-one".