421405116 has 24 divisors (see below), whose sum is σ = 1072667904. Its totient is φ = 127698480.

The previous prime is 421405111. The next prime is 421405133. The reversal of 421405116 is 611504124.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421405111) 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, 1596100 + ... + 1596363.

It is an arithmetic number, because the mean of its divisors is an integer number (44694496).

Almost surely, 2^421405116 is an apocalyptic number.

It is an amenable number.

421405116 is an abundant number, since it is smaller than the sum of its proper divisors (651262788).

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

421405116 is a wasteful number, since it uses less digits than its factorization.

421405116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3192481 (or 3192479 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 421405116 is about 20528.1542277916. The cubic root of 421405116 is about 749.7214467792.

The spelling of 421405116 in words is "four hundred twenty-one million, four hundred five thousand, one hundred sixteen".