42526421 has 8 divisors (see below), whose sum is σ = 48709440. Its totient is φ = 36370368.

The previous prime is 42526409. The next prime is 42526423. The reversal of 42526421 is 12462524.

42526421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42526421 - 2¹⁴ = 42510037 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 (42526423) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3236 + ... + 9773.

It is an arithmetic number, because the mean of its divisors is an integer number (6088680).

Almost surely, 2^42526421 is an apocalyptic number.

It is an amenable number.

42526421 is a deficient number, since it is larger than the sum of its proper divisors (6183019).

42526421 is a wasteful number, since it uses less digits than its factorization.

42526421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13483.

The product of its digits is 3840, while the sum is 26.

The square root of 42526421 is about 6521.2284885595. The cubic root of 42526421 is about 349.0489035282.

Adding to 42526421 its reverse (12462524), we get a palindrome (54988945).

The spelling of 42526421 in words is "forty-two million, five hundred twenty-six thousand, four hundred twenty-one".