421125330 has 32 divisors (see below), whose sum is σ = 1011600000. Its totient is φ = 112200192.

The previous prime is 421125281. The next prime is 421125337. The reversal of 421125330 is 33521124.

It is a junction number, because it is equal to n+sod(n) for n = 421125297 and 421125306.

It is not an unprimeable number, because it can be changed into a prime (421125337) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31851 + ... + 43089.

It is an arithmetic number, because the mean of its divisors is an integer number (31612500).

Almost surely, 2^421125330 is an apocalyptic number.

421125330 is an abundant number, since it is smaller than the sum of its proper divisors (590474670).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421125330 is a wasteful number, since it uses less digits than its factorization.

421125330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12498.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 421125330 is about 20521.3384066439. The cubic root of 421125330 is about 749.5554877083. Note that the first 3 decimals are identical.

Adding to 421125330 its reverse (33521124), we get a palindrome (454646454).

It can be divided in two parts, 421 and 125330, that added together give a triangular number (125751 = T₅₀₁).

The spelling of 421125330 in words is "four hundred twenty-one million, one hundred twenty-five thousand, three hundred thirty".