1242943308 has 36 divisors (see below), whose sum is σ = 3145189320. Its totient is φ = 413878656.

The previous prime is 1242943307. The next prime is 1242943309. The reversal of 1242943308 is 8033492421.

It is an interprime number because it is at equal distance from previous prime (1242943307) and next prime (1242943309).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1242943307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17503 + ... + 52841.

It is an arithmetic number, because the mean of its divisors is an integer number (87366370).

Almost surely, 2^1242943308 is an apocalyptic number.

1242943308 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1242943308 is an abundant number, since it is smaller than the sum of its proper divisors (1902246012).

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

1242943308 is a wasteful number, since it uses less digits than its factorization.

1242943308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36326 (or 36321 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 1242943308 is about 35255.4011181266. The cubic root of 1242943308 is about 1075.1864275199.

The spelling of 1242943308 in words is "one billion, two hundred forty-two million, nine hundred forty-three thousand, three hundred eight".