902420 has 12 divisors (see below), whose sum is σ = 1895124. Its totient is φ = 360960.

The previous prime is 902413. The next prime is 902437. The reversal of 902420 is 24209.

902420 = 20² + 21² + ... + 139².

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 753424 = 386^2 + 868^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

902420 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22541 + ... + 22580.

It is an arithmetic number, because the mean of its divisors is an integer number (157927).

2⁹⁰²⁴²⁰ is an apocalyptic number.

It is an amenable number.

902420 is an abundant number, since it is smaller than the sum of its proper divisors (992704).

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

902420 is a wasteful number, since it uses less digits than its factorization.

902420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45130 (or 45128 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 902420 is about 949.9578938037. The cubic root of 902420 is about 96.6353974699.

Adding to 902420 its reverse (24209), we get a palindrome (926629).

The spelling of 902420 in words is "nine hundred two thousand, four hundred twenty".