1200785642 has 16 divisors (see below), whose sum is σ = 2114125440. Its totient is φ = 500713488.

The previous prime is 1200785623. The next prime is 1200785659. The reversal of 1200785642 is 2465870021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1158542 + ... + 1159577.

It is an arithmetic number, because the mean of its divisors is an integer number (132132840).

Almost surely, 2^1200785642 is an apocalyptic number.

1200785642 is a deficient number, since it is larger than the sum of its proper divisors (913339798).

1200785642 is a wasteful number, since it uses less digits than its factorization.

1200785642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318165.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 1200785642 is about 34652.3540614487. The cubic root of 1200785642 is about 1062.8904267029.

The spelling of 1200785642 in words is "one billion, two hundred million, seven hundred eighty-five thousand, six hundred forty-two".