1380305442 has 24 divisors (see below), whose sum is σ = 2852547408. Its totient is φ = 445257960.

The previous prime is 1380305401. The next prime is 1380305449. The reversal of 1380305442 is 2445030831.

It is a super-2 number, since 2×1380305442² = 3810486226429630728, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1380305449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 113928 + ... + 125459.

It is an arithmetic number, because the mean of its divisors is an integer number (118856142).

Almost surely, 2^1380305442 is an apocalyptic number.

1380305442 is an abundant number, since it is smaller than the sum of its proper divisors (1472241966).

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

1380305442 is a wasteful number, since it uses less digits than its factorization.

1380305442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239454 (or 239423 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 1380305442 is about 37152.4621256788. The cubic root of 1380305442 is about 1113.4184154762.

The spelling of 1380305442 in words is "one billion, three hundred eighty million, three hundred five thousand, four hundred forty-two".