1051420042 has 8 divisors (see below), whose sum is σ = 1606887396. Its totient is φ = 515790912.

The previous prime is 1051420021. The next prime is 1051420049. The reversal of 1051420042 is 2400241501.

It can be written as a sum of positive squares in 2 ways, for example, as 1003685761 + 47734281 = 31681^2 + 6909^2 .

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

It is a super-2 number, since 2×1051420042² = 2210968209438563528, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1051420049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4959423 + ... + 4959634.

Almost surely, 2^1051420042 is an apocalyptic number.

1051420042 is a deficient number, since it is larger than the sum of its proper divisors (555467354).

1051420042 is an equidigital number, since it uses as much as digits as its factorization.

1051420042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9919112.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1051420042 is about 32425.6078123449. The cubic root of 1051420042 is about 1016.8543489871.

Adding to 1051420042 its reverse (2400241501), we get a palindrome (3451661543).

The spelling of 1051420042 in words is "one billion, fifty-one million, four hundred twenty thousand, forty-two".