421411620 has 48 divisors (see below), whose sum is σ = 1348518528. Its totient is φ = 96322560.

The previous prime is 421411603. The next prime is 421411631. The reversal of 421411620 is 26114124.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 501261 + ... + 502100.

It is an arithmetic number, because the mean of its divisors is an integer number (28094136).

Almost surely, 2^421411620 is an apocalyptic number.

It is an amenable number.

421411620 is an abundant number, since it is smaller than the sum of its proper divisors (927106908).

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

421411620 is a wasteful number, since it uses less digits than its factorization.

421411620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1003380 (or 1003378 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 421411620 is about 20528.3126437611. The cubic root of 421411620 is about 749.7253038461.

Adding to 421411620 its reverse (26114124), we get a palindrome (447525744).

The spelling of 421411620 in words is "four hundred twenty-one million, four hundred eleven thousand, six hundred twenty".