1243113620 has 48 divisors (see below), whose sum is σ = 2992187520. Its totient is φ = 424965504.

The previous prime is 1243113607. The next prime is 1243113629. The reversal of 1243113620 is 263113421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1243113629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35786 + ... + 61374.

It is an arithmetic number, because the mean of its divisors is an integer number (62337240).

Almost surely, 2^1243113620 is an apocalyptic number.

1243113620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1243113620 is an abundant number, since it is smaller than the sum of its proper divisors (1749073900).

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

1243113620 is a wasteful number, since it uses less digits than its factorization.

1243113620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25952 (or 25950 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1243113620 is about 35257.8164383446. The cubic root of 1243113620 is about 1075.2355337520.

The spelling of 1243113620 in words is "one billion, two hundred forty-three million, one hundred thirteen thousand, six hundred twenty".