421529542 has 8 divisors (see below), whose sum is σ = 722622096. Its totient is φ = 180655512.

The previous prime is 421529539. The next prime is 421529557. The reversal of 421529542 is 245925124.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 421529498 and 421529507.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15054613 + ... + 15054640.

It is an arithmetic number, because the mean of its divisors is an integer number (90327762).

Almost surely, 2^421529542 is an apocalyptic number.

421529542 is a deficient number, since it is larger than the sum of its proper divisors (301092554).

421529542 is a wasteful number, since it uses less digits than its factorization.

421529542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30109262.

The product of its digits is 28800, while the sum is 34.

The square root of 421529542 is about 20531.1846224225. The cubic root of 421529542 is about 749.7952282446.

The spelling of 421529542 in words is "four hundred twenty-one million, five hundred twenty-nine thousand, five hundred forty-two".