1142125 has 8 divisors (see below), whose sum is σ = 1425528. Its totient is φ = 913600.

The previous prime is 1142083. The next prime is 1142129. The reversal of 1142125 is 5212411.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 826281 = 562^2 + 909^2 .

It is not a de Polignac number, because 1142125 - 2¹³ = 1133933 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142099 and 1142108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4444 + ... + 4693.

It is an arithmetic number, because the mean of its divisors is an integer number (178191).

2^1142125 is an apocalyptic number.

It is an amenable number.

1142125 is a deficient number, since it is larger than the sum of its proper divisors (283403).

1142125 is an frugal number, since it uses more digits than its factorization.

1142125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9152 (or 9142 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1142125 is about 1068.7024843239. The cubic root of 1142125 is about 104.5292608245.

Adding to 1142125 its reverse (5212411), we get a palindrome (6354536).

The spelling of 1142125 in words is "one million, one hundred forty-two thousand, one hundred twenty-five".