1172142 has 12 divisors (see below), whose sum is σ = 2539680. Its totient is φ = 390708.

The previous prime is 1172111. The next prime is 1172147. The reversal of 1172142 is 2412711.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 65119 = 1172142 / (1 + 1 + 7 + 2 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1172147) 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 5 ways as a sum of consecutive naturals, for example, 32542 + ... + 32577.

It is an arithmetic number, because the mean of its divisors is an integer number (211640).

2^1172142 is an apocalyptic number.

1172142 is an abundant number, since it is smaller than the sum of its proper divisors (1367538).

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

1172142 is a wasteful number, since it uses less digits than its factorization.

1172142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65127 (or 65124 counting only the distinct ones).

The product of its digits is 112, while the sum is 18.

The square root of 1172142 is about 1082.6550697244. The cubic root of 1172142 is about 105.4370895421.

Adding to 1172142 its reverse (2412711), we get a palindrome (3584853).

The spelling of 1172142 in words is "one million, one hundred seventy-two thousand, one hundred forty-two".