1023139 has 8 divisors (see below), whose sum is σ = 1110032. Its totient is φ = 937440.

The previous prime is 1023133. The next prime is 1023163. The reversal of 1023139 is 9313201.

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 1023139 - 2⁵ = 1023107 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1023133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2557 + ... + 2929.

It is an arithmetic number, because the mean of its divisors is an integer number (138754).

2^1023139 is an apocalyptic number.

1023139 is a deficient number, since it is larger than the sum of its proper divisors (86893).

1023139 is a wasteful number, since it uses less digits than its factorization.

1023139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 597.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 1023139 is about 1011.5033366233. The cubic root of 1023139 is about 100.7654262779.

The spelling of 1023139 in words is "one million, twenty-three thousand, one hundred thirty-nine".