1040212442 has 4 divisors (see below), whose sum is σ = 1560318666. Its totient is φ = 520106220.

The previous prime is 1040212429. The next prime is 1040212447. The reversal of 1040212442 is 2442120401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2442120401 = 7 ⋅348874343.

It can be written as a sum of positive squares in only one way, i.e., 791803321 + 248409121 = 28139^2 + 15761^2 .

It is not an unprimeable number, because it can be changed into a prime (1040212447) 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, 260053109 + ... + 260053112.

Almost surely, 2^1040212442 is an apocalyptic number.

1040212442 is a deficient number, since it is larger than the sum of its proper divisors (520106224).

1040212442 is an equidigital number, since it uses as much as digits as its factorization.

1040212442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520106223.

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 1040212442 is about 32252.3245983914. The cubic root of 1040212442 is about 1013.2283855369.

Adding to 1040212442 its reverse (2442120401), we get a palindrome (3482332843).

The spelling of 1040212442 in words is "one billion, forty million, two hundred twelve thousand, four hundred forty-two".