1380287142 has 56 divisors (see below), whose sum is σ = 3343058544. Its totient is φ = 424697904.

The previous prime is 1380287113. The next prime is 1380287147. The reversal of 1380287142 is 2417820831.

It is a junction number, because it is equal to n+sod(n) for n = 1380287097 and 1380287106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1380287147) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 17458 + ... + 55365.

It is an arithmetic number, because the mean of its divisors is an integer number (59697474).

Almost surely, 2^1380287142 is an apocalyptic number.

1380287142 is an abundant number, since it is smaller than the sum of its proper divisors (1962771402).

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

1380287142 is an equidigital number, since it uses as much as digits as its factorization.

1380287142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72856 (or 72841 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 1380287142 is about 37152.2158423963. The cubic root of 1380287142 is about 1113.4134949114.

The spelling of 1380287142 in words is "one billion, three hundred eighty million, two hundred eighty-seven thousand, one hundred forty-two".