1243378130 has 32 divisors (see below), whose sum is σ = 2373131520. Its totient is φ = 467424000.

The previous prime is 1243378127. The next prime is 1243378187. The reversal of 1243378130 is 318733421.

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, 122801 + ... + 132539.

It is an arithmetic number, because the mean of its divisors is an integer number (74160360).

Almost surely, 2^1243378130 is an apocalyptic number.

1243378130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243378130 is a deficient number, since it is larger than the sum of its proper divisors (1129753390).

1243378130 is a wasteful number, since it uses less digits than its factorization.

1243378130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10514.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 1243378130 is about 35261.5673219442. The cubic root of 1243378130 is about 1075.3117912977.

The spelling of 1243378130 in words is "one billion, two hundred forty-three million, three hundred seventy-eight thousand, one hundred thirty".