1012142 has 4 divisors (see below), whose sum is σ = 1518216. Its totient is φ = 506070.

The previous prime is 1012133. The next prime is 1012147. The reversal of 1012142 is 2412101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2412101 = 107 ⋅22543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253034 + ... + 253037.

It is an arithmetic number, because the mean of its divisors is an integer number (379554).

2^1012142 is an apocalyptic number.

1012142 is a deficient number, since it is larger than the sum of its proper divisors (506074).

1012142 is an equidigital number, since it uses as much as digits as its factorization.

1012142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506073.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012142 is about 1006.0526825172. The cubic root of 1012142 is about 100.4031062038.

Adding to 1012142 its reverse (2412101), we get a palindrome (3424243).

The spelling of 1012142 in words is "one million, twelve thousand, one hundred forty-two".