421525334 has 8 divisors (see below), whose sum is σ = 638806728. Its totient is φ = 208589760.

The previous prime is 421525331. The next prime is 421525339. The reversal of 421525334 is 433525124.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 421525297 and 421525306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421525331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086212 + ... + 1086599.

It is an arithmetic number, because the mean of its divisors is an integer number (79850841).

Almost surely, 2^421525334 is an apocalyptic number.

421525334 is a deficient number, since it is larger than the sum of its proper divisors (217281394).

421525334 is a wasteful number, since it uses less digits than its factorization.

421525334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172910.

The product of its digits is 14400, while the sum is 29.

The square root of 421525334 is about 20531.0821439105. The cubic root of 421525334 is about 749.7927332445.

The spelling of 421525334 in words is "four hundred twenty-one million, five hundred twenty-five thousand, three hundred thirty-four".