42024021 has 8 divisors (see below), whose sum is σ = 60342240. Its totient is φ = 25860912.

The previous prime is 42024007. The next prime is 42024023. The reversal of 42024021 is 12042024.

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

It is not a de Polignac number, because 42024021 - 2⁶ = 42023957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42024023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 538731 + ... + 538808.

It is an arithmetic number, because the mean of its divisors is an integer number (7542780).

Almost surely, 2^42024021 is an apocalyptic number.

It is an amenable number.

42024021 is a deficient number, since it is larger than the sum of its proper divisors (18318219).

42024021 is a wasteful number, since it uses less digits than its factorization.

42024021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077555.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 42024021 is about 6482.5936938852. The cubic root of 42024021 is about 347.6689198243.

Adding to 42024021 its reverse (12042024), we get a palindrome (54066045).

The spelling of 42024021 in words is "forty-two million, twenty-four thousand, twenty-one".