9090420 has 24 divisors (see below), whose sum is σ = 25453344. Its totient is φ = 2424096.

The previous prime is 9090407. The next prime is 9090437. The reversal of 9090420 is 240909.

9090420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75694 + ... + 75813.

It is an arithmetic number, because the mean of its divisors is an integer number (1060556).

Almost surely, 2^9090420 is an apocalyptic number.

It is an amenable number.

9090420 is an abundant number, since it is smaller than the sum of its proper divisors (16362924).

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

9090420 is a wasteful number, since it uses less digits than its factorization.

9090420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151519 (or 151517 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 9090420 is about 3015.0323381350. The cubic root of 9090420 is about 208.7026593737.

The spelling of 9090420 in words is "nine million, ninety thousand, four hundred twenty".