1102139 has 4 divisors (see below), whose sum is σ = 1104240. Its totient is φ = 1100040.

The previous prime is 1102117. The next prime is 1102147. The reversal of 1102139 is 9312011.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9312011 = 1997 ⋅4663.

It is a cyclic number.

It is not a de Polignac number, because 1102139 - 2⁸ = 1101883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1102159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497 + ... + 1565.

It is an arithmetic number, because the mean of its divisors is an integer number (276060).

2^1102139 is an apocalyptic number.

1102139 is a deficient number, since it is larger than the sum of its proper divisors (2101).

1102139 is a wasteful number, since it uses less digits than its factorization.

1102139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1102139 is about 1049.8280811638. The cubic root of 1102139 is about 103.2948787425.

The spelling of 1102139 in words is "one million, one hundred two thousand, one hundred thirty-nine".