1243200030 has 32 divisors (see below), whose sum is σ = 2985271200. Its totient is φ = 331343232.

The previous prime is 1243200029. The next prime is 1243200031. The reversal of 1243200030 is 300023421.

It is an interprime number because it is at equal distance from previous prime (1243200029) and next prime (1243200031).

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

It is a junction number, because it is equal to n+sod(n) for n = 1243199982 and 1243200009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243200031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52056 + ... + 72084.

It is an arithmetic number, because the mean of its divisors is an integer number (93289725).

Almost surely, 2^1243200030 is an apocalyptic number.

1243200030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243200030 is an abundant number, since it is smaller than the sum of its proper divisors (1742071170).

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

1243200030 is a wasteful number, since it uses less digits than its factorization.

1243200030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22108.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 1243200030 is about 35259.0418190852. The cubic root of 1243200030 is about 1075.2604467200.

Adding to 1243200030 its reverse (300023421), we get a palindrome (1543223451).

The spelling of 1243200030 in words is "one billion, two hundred forty-three million, two hundred thousand, thirty".