1381642 has 16 divisors (see below), whose sum is σ = 2208960. Its totient is φ = 646272.

The previous prime is 1381637. The next prime is 1381643. The reversal of 1381642 is 2461831.

It is not an unprimeable number, because it can be changed into a prime (1381643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3738 + ... + 4090.

It is an arithmetic number, because the mean of its divisors is an integer number (138060).

2^1381642 is an apocalyptic number.

1381642 is a deficient number, since it is larger than the sum of its proper divisors (827318).

1381642 is a wasteful number, since it uses less digits than its factorization.

1381642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477.

The product of its digits is 1152, while the sum is 25.

The square root of 1381642 is about 1175.4326862905. The cubic root of 1381642 is about 111.3777676109.

The spelling of 1381642 in words is "one million, three hundred eighty-one thousand, six hundred forty-two".