1051442449 has 4 divisors (see below), whose sum is σ = 1061088820. Its totient is φ = 1041796080.

The previous prime is 1051442429. The next prime is 1051442459. The reversal of 1051442449 is 9442441501.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 522442449 + 529000000 = 22857^2 + 23000^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051442449 - 2¹⁹ = 1050918161 is a prime.

It is a super-3 number, since 3×1051442449³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1051442419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4823022 + ... + 4823239.

It is an arithmetic number, because the mean of its divisors is an integer number (265272205).

Almost surely, 2^1051442449 is an apocalyptic number.

It is an amenable number.

1051442449 is a deficient number, since it is larger than the sum of its proper divisors (9646371).

1051442449 is an equidigital number, since it uses as much as digits as its factorization.

1051442449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9646370.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 1051442449 is about 32425.9533244591. The cubic root of 1051442449 is about 1016.8615723906.

The spelling of 1051442449 in words is "one billion, fifty-one million, four hundred forty-two thousand, four hundred forty-nine".