420025916 has 12 divisors (see below), whose sum is σ = 735189000. Its totient is φ = 209971920.

The previous prime is 420025877. The next prime is 420025939. The reversal of 420025916 is 619520024.

It is a happy number.

It is a super-2 number, since 2×420025916² = 352843540223278112, which contains 22 as substring.

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, 33611 + ... + 44381.

It is an arithmetic number, because the mean of its divisors is an integer number (61265750).

Almost surely, 2^420025916 is an apocalyptic number.

It is an amenable number.

420025916 is a deficient number, since it is larger than the sum of its proper divisors (315163084).

420025916 is a wasteful number, since it uses less digits than its factorization.

420025916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20524 (or 20522 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 420025916 is about 20494.5338078230. The cubic root of 420025916 is about 748.9026417080.

The spelling of 420025916 in words is "four hundred twenty million, twenty-five thousand, nine hundred sixteen".