421240002 has 16 divisors (see below), whose sum is σ = 842704992. Its totient is φ = 140375840.

The previous prime is 421239989. The next prime is 421240007. The reversal of 421240002 is 200042124.

It is not an unprimeable number, because it can be changed into a prime (421240007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24238 + ... + 37814.

It is an arithmetic number, because the mean of its divisors is an integer number (52669062).

Almost surely, 2^421240002 is an apocalyptic number.

421240002 is an abundant number, since it is smaller than the sum of its proper divisors (421464990).

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

421240002 is a wasteful number, since it uses less digits than its factorization.

421240002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18753.

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 421240002 is about 20524.1321862826. The cubic root of 421240002 is about 749.6235159335.

Adding to 421240002 its reverse (200042124), we get a palindrome (621282126).

The spelling of 421240002 in words is "four hundred twenty-one million, two hundred forty thousand, two".