1242099 has 12 divisors (see below), whose sum is σ = 1856400. Its totient is φ = 799344.

The previous prime is 1242097. The next prime is 1242103. The reversal of 1242099 is 9902421.

It is not a de Polignac number, because 1242099 - 2¹ = 1242097 is a prime.

1242099 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1242097) 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, 2119 + ... + 2640.

It is an arithmetic number, because the mean of its divisors is an integer number (154700).

2^1242099 is an apocalyptic number.

1242099 is a deficient number, since it is larger than the sum of its proper divisors (614301).

1242099 is a wasteful number, since it uses less digits than its factorization.

1242099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4794 (or 4791 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1242099 is about 1114.4949528822. The cubic root of 1242099 is about 107.4942921072.

The spelling of 1242099 in words is "one million, two hundred forty-two thousand, ninety-nine".