1145422 has 4 divisors (see below), whose sum is σ = 1718136. Its totient is φ = 572710.

The previous prime is 1145411. The next prime is 1145429. The reversal of 1145422 is 2245411.

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

It is a super-3 number, since 3×1145422³ = 4508351983331074344, which contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1145422.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 286354 + ... + 286357.

It is an arithmetic number, because the mean of its divisors is an integer number (429534).

2^1145422 is an apocalyptic number.

1145422 is a deficient number, since it is larger than the sum of its proper divisors (572714).

1145422 is an equidigital number, since it uses as much as digits as its factorization.

1145422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572713.

The product of its digits is 320, while the sum is 19.

The square root of 1145422 is about 1070.2438974365. The cubic root of 1145422 is about 104.6297465810.

It can be divided in two parts, 11454 and 22, that added together give a triangular number (11476 = T₁₅₁).

The spelling of 1145422 in words is "one million, one hundred forty-five thousand, four hundred twenty-two".