1200247420 has 12 divisors (see below), whose sum is σ = 2520519624. Its totient is φ = 480098960.

The previous prime is 1200247397. The next prime is 1200247421. The reversal of 1200247420 is 247420021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1200247391 and 1200247400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200247421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30006166 + ... + 30006205.

It is an arithmetic number, because the mean of its divisors is an integer number (210043302).

Almost surely, 2^1200247420 is an apocalyptic number.

1200247420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1200247420 is an abundant number, since it is smaller than the sum of its proper divisors (1320272204).

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

1200247420 is a wasteful number, since it uses less digits than its factorization.

1200247420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60012380 (or 60012378 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 1200247420 is about 34644.5871674061. The cubic root of 1200247420 is about 1062.7315983257.

Adding to 1200247420 its reverse (247420021), we get a palindrome (1447667441).

The spelling of 1200247420 in words is "one billion, two hundred million, two hundred forty-seven thousand, four hundred twenty".