1000212420 has 48 divisors (see below), whose sum is σ = 2838971520. Its totient is φ = 263068416.

The previous prime is 1000212377. The next prime is 1000212461. The reversal of 1000212420 is 242120001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 1000212396 and 1000212405.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109800 + ... + 118559.

It is an arithmetic number, because the mean of its divisors is an integer number (59145240).

Almost surely, 2^1000212420 is an apocalyptic number.

1000212420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000212420 is an abundant number, since it is smaller than the sum of its proper divisors (1838759100).

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

1000212420 is a wasteful number, since it uses less digits than its factorization.

1000212420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228444 (or 228442 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 1000212420 is about 31626.1350784442. The cubic root of 1000212420 is about 1000.0708016537.

Adding to 1000212420 its reverse (242120001), we get a palindrome (1242332421).

It can be divided in two parts, 10002 and 12420, that added together give a palindrome (22422).

The spelling of 1000212420 in words is "one billion, two hundred twelve thousand, four hundred twenty".