1386120042 has 12 divisors (see below), whose sum is σ = 3003260130. Its totient is φ = 462040008.

The previous prime is 1386120013. The next prime is 1386120049. The reversal of 1386120042 is 2400216831.

1386120042 is a `hidden beast` number, since 1 + 3 + 8 + 612 + 0 + 0 + 42 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1384509681 + 1610361 = 37209^2 + 1269^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1386119988 and 1386120015.

It is not an unprimeable number, because it can be changed into a prime (1386120049) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38503317 + ... + 38503352.

Almost surely, 2^1386120042 is an apocalyptic number.

1386120042 is an abundant number, since it is smaller than the sum of its proper divisors (1617140088).

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

1386120042 is a wasteful number, since it uses less digits than its factorization.

1386120042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77006677 (or 77006674 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1386120042 is about 37230.6331130697. The cubic root of 1386120042 is about 1114.9796672946.

Adding to 1386120042 its reverse (2400216831), we get a palindrome (3786336873).

The spelling of 1386120042 in words is "one billion, three hundred eighty-six million, one hundred twenty thousand, forty-two".