1142655 has 16 divisors (see below), whose sum is σ = 1936224. Its totient is φ = 573440.

The previous prime is 1142651. The next prime is 1142677. The reversal of 1142655 is 5562411.

It is not a de Polignac number, because 1142655 - 2² = 1142651 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1986 + ... + 2495.

It is an arithmetic number, because the mean of its divisors is an integer number (121014).

2^1142655 is an apocalyptic number.

1142655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1142655 is a deficient number, since it is larger than the sum of its proper divisors (793569).

1142655 is a wasteful number, since it uses less digits than its factorization.

1142655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4506.

The product of its digits is 1200, while the sum is 24.

The square root of 1142655 is about 1068.9504198044. The cubic root of 1142655 is about 104.5454271639.

The spelling of 1142655 in words is "one million, one hundred forty-two thousand, six hundred fifty-five".