1380123642 has 8 divisors (see below), whose sum is σ = 2760247296. Its totient is φ = 460041212.

The previous prime is 1380123611. The next prime is 1380123649. The reversal of 1380123642 is 2463210831.

It is a sphenic number, since it is the product of 3 distinct primes.

1380123642 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1380123649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115010298 + ... + 115010309.

It is an arithmetic number, because the mean of its divisors is an integer number (345030912).

Almost surely, 2^1380123642 is an apocalyptic number.

1380123642 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1380123642 is a wasteful number, since it uses less digits than its factorization.

1380123642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230020612.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1380123642 is about 37150.0153701180. The cubic root of 1380123642 is about 1113.3695305581.

The spelling of 1380123642 in words is "one billion, three hundred eighty million, one hundred twenty-three thousand, six hundred forty-two".