1381842 has 48 divisors (see below), whose sum is σ = 3736512. Its totient is φ = 358560.

The previous prime is 1381837. The next prime is 1381859. The reversal of 1381842 is 2481831.

It is a nialpdrome in base 11.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 888 + ... + 1884.

It is an arithmetic number, because the mean of its divisors is an integer number (77844).

2^1381842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1381842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1868256).

1381842 is an abundant number, since it is smaller than the sum of its proper divisors (2354670).

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

1381842 is a wasteful number, since it uses less digits than its factorization.

1381842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023 (or 1020 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1381842 is about 1175.5177582665. The cubic root of 1381842 is about 111.3831415256.

The spelling of 1381842 in words is "one million, three hundred eighty-one thousand, eight hundred forty-two".