1142945 has 16 divisors (see below), whose sum is σ = 1477440. Its totient is φ = 846144.

The previous prime is 1142941. The next prime is 1142959. The reversal of 1142945 is 5492411.

It is a cyclic number.

It is not a de Polignac number, because 1142945 - 2² = 1142941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4922 + ... + 5148.

It is an arithmetic number, because the mean of its divisors is an integer number (92340).

2^1142945 is an apocalyptic number.

It is an amenable number.

1142945 is a deficient number, since it is larger than the sum of its proper divisors (334495).

1142945 is a wasteful number, since it uses less digits than its factorization.

1142945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304.

The product of its digits is 1440, while the sum is 26.

The square root of 1142945 is about 1069.0860582759. The cubic root of 1142945 is about 104.5542707808.

The spelling of 1142945 in words is "one million, one hundred forty-two thousand, nine hundred forty-five".