1105642 has 4 divisors (see below), whose sum is σ = 1658466. Its totient is φ = 552820.

The previous prime is 1105639. The next prime is 1105649. The reversal of 1105642 is 2465011.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 83521 = 1011^2 + 289^2 .

It is not an unprimeable number, because it can be changed into a prime (1105649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276409 + ... + 276412.

2^1105642 is an apocalyptic number.

1105642 is a deficient number, since it is larger than the sum of its proper divisors (552824).

1105642 is an equidigital number, since it uses as much as digits as its factorization.

1105642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552823.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1105642 is about 1051.4951259992. The cubic root of 1105642 is about 103.4041992790.

The spelling of 1105642 in words is "one million, one hundred five thousand, six hundred forty-two".