421534526 has 16 divisors (see below), whose sum is σ = 732810240. Its totient is φ = 178112760.

The previous prime is 421534523. The next prime is 421534649. The reversal of 421534526 is 625435124.

It is a super-2 number, since 2×421534526² = 355382713220089352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421534492 and 421534501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421534523) 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, 211046 + ... + 213033.

It is an arithmetic number, because the mean of its divisors is an integer number (45800640).

Almost surely, 2^421534526 is an apocalyptic number.

421534526 is a deficient number, since it is larger than the sum of its proper divisors (311275714).

421534526 is a wasteful number, since it uses less digits than its factorization.

421534526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424159.

The product of its digits is 28800, while the sum is 32.

The square root of 421534526 is about 20531.3059984016. The cubic root of 421534526 is about 749.7981833279.

The spelling of 421534526 in words is "four hundred twenty-one million, five hundred thirty-four thousand, five hundred twenty-six".