1142099 has 8 divisors (see below), whose sum is σ = 1312608. Its totient is φ = 973440.

The previous prime is 1142083. The next prime is 1142129. The reversal of 1142099 is 9902411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1142099 - 2⁴ = 1142083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142039) 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 7 ways as a sum of consecutive naturals, for example, 1349 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (164076).

2^1142099 is an apocalyptic number.

1142099 is a deficient number, since it is larger than the sum of its proper divisors (170509).

1142099 is an equidigital number, since it uses as much as digits as its factorization.

1142099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925.

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 1142099 is about 1068.6903199711. The cubic root of 1142099 is about 104.5284676302.

The spelling of 1142099 in words is "one million, one hundred forty-two thousand, ninety-nine".