420913940 has 12 divisors (see below), whose sum is σ = 883919316. Its totient is φ = 168365568.

The previous prime is 420913937. The next prime is 420913951. The reversal of 420913940 is 49319024.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 274697476 + 146216464 = 16574^2 + 12092^2 .

It is a junction number, because it is equal to n+sod(n) for n = 420913897 and 420913906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10522829 + ... + 10522868.

It is an arithmetic number, because the mean of its divisors is an integer number (73659943).

Almost surely, 2^420913940 is an apocalyptic number.

It is an amenable number.

420913940 is an abundant number, since it is smaller than the sum of its proper divisors (463005376).

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

420913940 is a wasteful number, since it uses less digits than its factorization.

420913940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045706 (or 21045704 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 420913940 is about 20516.1872676187. The cubic root of 420913940 is about 749.4300499486.

The spelling of 420913940 in words is "four hundred twenty million, nine hundred thirteen thousand, nine hundred forty".