1042091242 has 4 divisors (see below), whose sum is σ = 1563136866. Its totient is φ = 521045620.

The previous prime is 1042091227. The next prime is 1042091263. The reversal of 1042091242 is 2421902401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2421902401 = 83 ⋅29179547.

It can be written as a sum of positive squares in only one way, i.e., 579798241 + 462293001 = 24079^2 + 21501^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260522809 + ... + 260522812.

Almost surely, 2^1042091242 is an apocalyptic number.

1042091242 is a deficient number, since it is larger than the sum of its proper divisors (521045624).

1042091242 is an equidigital number, since it uses as much as digits as its factorization.

1042091242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521045623.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1042091242 is about 32281.4380410787. The cubic root of 1042091242 is about 1013.8380393780.

Adding to 1042091242 its reverse (2421902401), we get a palindrome (3463993643).

The spelling of 1042091242 in words is "one billion, forty-two million, ninety-one thousand, two hundred forty-two".