1145427 has 8 divisors (see below), whose sum is σ = 1536000. Its totient is φ = 759240.

The previous prime is 1145411. The next prime is 1145429. The reversal of 1145427 is 7245411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1145427 - 2⁴ = 1145411 is a prime.

1145427 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 1145397 and 1145406.

It is not an unprimeable number, because it can be changed into a prime (1145429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (192000).

2^1145427 is an apocalyptic number.

1145427 is a deficient number, since it is larger than the sum of its proper divisors (390573).

1145427 is a wasteful number, since it uses less digits than its factorization.

1145427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2193.

The product of its digits is 1120, while the sum is 24.

The square root of 1145427 is about 1070.2462333501. The cubic root of 1145427 is about 104.6298988241.

The spelling of 1145427 in words is "one million, one hundred forty-five thousand, four hundred twenty-seven".