1142190 has 96 divisors (see below), whose sum is σ = 3556800. Its totient is φ = 254016.

The previous prime is 1142171. The next prime is 1142191. The reversal of 1142190 is 912411.

It is a super-2 number, since 2×1142190² = 2609195992200, 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 (1142191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30852 + ... + 30888.

It is an arithmetic number, because the mean of its divisors is an integer number (37050).

2^1142190 is an apocalyptic number.

1142190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778400).

1142190 is an abundant number, since it is smaller than the sum of its proper divisors (2414610).

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

1142190 is a wasteful number, since it uses less digits than its factorization.

1142190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71 (or 54 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1142190 is about 1068.7328946000. The cubic root of 1142190 is about 104.5312437578.

It can be divided in two parts, 11421 and 90, that added together give a palindrome (11511).

The spelling of 1142190 in words is "one million, one hundred forty-two thousand, one hundred ninety".