1917142 has 16 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 902440.

The previous prime is 1917137. The next prime is 1917173. The reversal of 1917142 is 2417191.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2973 + ... + 3559.

It is an arithmetic number, because the mean of its divisors is an integer number (190512).

2^1917142 is an apocalyptic number.

1917142 is a deficient number, since it is larger than the sum of its proper divisors (1131050).

1917142 is a wasteful number, since it uses less digits than its factorization.

1917142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683.

The product of its digits is 504, while the sum is 25.

The square root of 1917142 is about 1384.6089700706. The cubic root of 1917142 is about 124.2275996794.

It can be divided in two parts, 19 and 17142, that added together give a square (17161 = 131²).

The spelling of 1917142 in words is "one million, nine hundred seventeen thousand, one hundred forty-two".