1243650542 has 8 divisors (see below), whose sum is σ = 1882590600. Its totient is φ = 616120344.

The previous prime is 1243650511. The next prime is 1243650571. The reversal of 1243650542 is 2450563421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 1243650499 and 1243650508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2852192 + ... + 2852627.

It is an arithmetic number, because the mean of its divisors is an integer number (235323825).

Almost surely, 2^1243650542 is an apocalyptic number.

1243650542 is a deficient number, since it is larger than the sum of its proper divisors (638940058).

1243650542 is a wasteful number, since it uses less digits than its factorization.

1243650542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5704930.

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 1243650542 is about 35265.4298428362. The cubic root of 1243650542 is about 1075.3903156657.

The spelling of 1243650542 in words is "one billion, two hundred forty-three million, six hundred fifty thousand, five hundred forty-two".