1020213420 has 48 divisors (see below), whose sum is σ = 2861230848. Its totient is φ = 271615680.

The previous prime is 1020213409. The next prime is 1020213421. The reversal of 1020213420 is 243120201.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1020213420.

It is not an unprimeable number, because it can be changed into a prime (1020213421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24387 + ... + 51333.

It is an arithmetic number, because the mean of its divisors is an integer number (59608976).

Almost surely, 2^1020213420 is an apocalyptic number.

1020213420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020213420 is an abundant number, since it is smaller than the sum of its proper divisors (1841017428).

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

1020213420 is a wasteful number, since it uses less digits than its factorization.

1020213420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27590 (or 27588 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1020213420 is about 31940.7798902907. The cubic root of 1020213420 is about 1006.6929116637.

Adding to 1020213420 its reverse (243120201), we get a palindrome (1263333621).

The spelling of 1020213420 in words is "one billion, twenty million, two hundred thirteen thousand, four hundred twenty".