1231042 has 4 divisors (see below), whose sum is σ = 1846566. Its totient is φ = 615520.

The previous prime is 1231039. The next prime is 1231049. The reversal of 1231042 is 2401321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1121481 + 109561 = 1059^2 + 331^2 .

It is not an unprimeable number, because it can be changed into a prime (1231049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307759 + ... + 307762.

2^1231042 is an apocalyptic number.

1231042 is a deficient number, since it is larger than the sum of its proper divisors (615524).

1231042 is an equidigital number, since it uses as much as digits as its factorization.

1231042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615523.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1231042 is about 1109.5233210708. The cubic root of 1231042 is about 107.1743743047.

Adding to 1231042 its reverse (2401321), we get a palindrome (3632363).

The spelling of 1231042 in words is "one million, two hundred thirty-one thousand, forty-two".