1142025 has 12 divisors (see below), whose sum is σ = 1888272. Its totient is φ = 609040.

The previous prime is 1142021. The next prime is 1142039. The reversal of 1142025 is 5202411.

It is not a de Polignac number, because 1142025 - 2² = 1142021 is a prime.

It is a super-2 number, since 2×1142025² = 2608442201250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 1141995 and 1142013.

It is not an unprimeable number, because it can be changed into a prime (1142021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7539 + ... + 7688.

It is an arithmetic number, because the mean of its divisors is an integer number (157356).

2^1142025 is an apocalyptic number.

1142025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1142025 is a deficient number, since it is larger than the sum of its proper divisors (746247).

1142025 is a wasteful number, since it uses less digits than its factorization.

1142025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15240 (or 15235 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1142025 is about 1068.6556975939. The cubic root of 1142025 is about 104.5262100110.

Adding to 1142025 its reverse (5202411), we get a palindrome (6344436).

The spelling of 1142025 in words is "one million, one hundred forty-two thousand, twenty-five".