420505292 has 12 divisors (see below), whose sum is σ = 742762440. Its totient is φ = 208287456.

The previous prime is 420505291. The next prime is 420505301. The reversal of 420505292 is 292505024.

It is not an unprimeable number, because it can be changed into a prime (420505291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490817 + ... + 491672.

It is an arithmetic number, because the mean of its divisors is an integer number (61896870).

Almost surely, 2^420505292 is an apocalyptic number.

It is an amenable number.

420505292 is a deficient number, since it is larger than the sum of its proper divisors (322257148).

420505292 is a wasteful number, since it uses less digits than its factorization.

420505292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 982600 (or 982598 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 420505292 is about 20506.2256888000. The cubic root of 420505292 is about 749.1874411673.

The spelling of 420505292 in words is "four hundred twenty million, five hundred five thousand, two hundred ninety-two".