1243680051 has 24 divisors (see below), whose sum is σ = 1738376640. Its totient is φ = 790751584.

The previous prime is 1243680047. The next prime is 1243680059. The reversal of 1243680051 is 1500863421.

It is not a de Polignac number, because 1243680051 - 2² = 1243680047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1243680059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206440 + ... + 212378.

It is an arithmetic number, because the mean of its divisors is an integer number (72432360).

Almost surely, 2^1243680051 is an apocalyptic number.

1243680051 is a deficient number, since it is larger than the sum of its proper divisors (494696589).

1243680051 is an equidigital number, since it uses as much as digits as its factorization.

1243680051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6083 (or 6054 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 1243680051 is about 35265.8482245926. The cubic root of 1243680051 is about 1075.3988211209.

The spelling of 1243680051 in words is "one billion, two hundred forty-three million, six hundred eighty thousand, fifty-one".