1051217842 has 8 divisors (see below), whose sum is σ = 1577164716. Its totient is φ = 525496272.

The previous prime is 1051217833. The next prime is 1051217879. The reversal of 1051217842 is 2487121501.

It can be written as a sum of positive squares in 2 ways, for example, as 899460081 + 151757761 = 29991^2 + 12319^2 .

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

It is a super-2 number, since 2×1051217842² = 2210117902678273928, which contains 22 as substring.

It is an unprimeable number.

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, 44133 + ... + 63640.

Almost surely, 2^1051217842 is an apocalyptic number.

1051217842 is a deficient number, since it is larger than the sum of its proper divisors (525946874).

1051217842 is a wasteful number, since it uses less digits than its factorization.

1051217842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112652.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 1051217842 is about 32422.4897563404. The cubic root of 1051217842 is about 1016.7891605997.

The spelling of 1051217842 in words is "one billion, fifty-one million, two hundred seventeen thousand, eight hundred forty-two".