1012138 has 8 divisors (see below), whose sum is σ = 1584288. Its totient is φ = 484044.

The previous prime is 1012133. The next prime is 1012147. The reversal of 1012138 is 8312101.

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

It is not an unprimeable number, because it can be changed into a prime (1012133) 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, 10956 + ... + 11047.

It is an arithmetic number, because the mean of its divisors is an integer number (198036).

2^1012138 is an apocalyptic number.

1012138 is a deficient number, since it is larger than the sum of its proper divisors (572150).

1012138 is a wasteful number, since it uses less digits than its factorization.

1012138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22028.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1012138 is about 1006.0506945477. The cubic root of 1012138 is about 100.4029739388.

Adding to 1012138 its reverse (8312101), we get a palindrome (9324239).

It can be divided in two parts, 1012 and 138, that multiplied together give a triangular number (139656 = T₅₂₈).

The spelling of 1012138 in words is "one million, twelve thousand, one hundred thirty-eight".