1145142 has 24 divisors (see below), whose sum is σ = 2507544. Its totient is φ = 377664.

The previous prime is 1145141. The next prime is 1145143. The reversal of 1145142 is 2415411.

It is an interprime number because it is at equal distance from previous prime (1145141) and next prime (1145143).

It is a super-2 number, since 2×1145142² = 2622700400328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145141) 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 11 ways as a sum of consecutive naturals, for example, 1753 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (104481).

2^1145142 is an apocalyptic number.

1145142 is an abundant number, since it is smaller than the sum of its proper divisors (1362402).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1145142 is a wasteful number, since it uses less digits than its factorization.

1145142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 684 (or 681 counting only the distinct ones).

The product of its digits is 160, while the sum is 18.

The square root of 1145142 is about 1070.1130781371. The cubic root of 1145142 is about 104.6212202572.

The spelling of 1145142 in words is "one million, one hundred forty-five thousand, one hundred forty-two".