421602240 has 112 divisors (see below), whose sum is σ = 1342631808. Its totient is φ = 112088064.

The previous prime is 421602127. The next prime is 421602241. The reversal of 421602240 is 42206124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421602241) 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, 616939 + ... + 617621.

It is an arithmetic number, because the mean of its divisors is an integer number (11987784).

Almost surely, 2^421602240 is an apocalyptic number.

421602240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421602240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (671315904).

421602240 is an abundant number, since it is smaller than the sum of its proper divisors (921029568).

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

421602240 is a wasteful number, since it uses less digits than its factorization.

421602240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1346 (or 1336 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 421602240 is about 20532.9549748691. The cubic root of 421602240 is about 749.8383295972.

Adding to 421602240 its reverse (42206124), we get a palindrome (463808364).

The spelling of 421602240 in words is "four hundred twenty-one million, six hundred two thousand, two hundred forty".