1380785042 has 32 divisors (see below), whose sum is σ = 2551336704. Its totient is φ = 545774400.

The previous prime is 1380785027. The next prime is 1380785099. The reversal of 1380785042 is 2405870831.

It is a junction number, because it is equal to n+sod(n) for n = 1380784987 and 1380785005.

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, 272492 + ... + 277512.

It is an arithmetic number, because the mean of its divisors is an integer number (79729272).

Almost surely, 2^1380785042 is an apocalyptic number.

1380785042 is a deficient number, since it is larger than the sum of its proper divisors (1170551662).

1380785042 is a wasteful number, since it uses less digits than its factorization.

1380785042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6554.

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 1380785042 is about 37158.9160498527. The cubic root of 1380785042 is about 1113.5473564145.

The spelling of 1380785042 in words is "one billion, three hundred eighty million, seven hundred eighty-five thousand, forty-two".