Search a number
-
+
1025446442 = 215719316921
BaseRepresentation
bin111101000111110…
…001001000101010
32122110120002001212
4331013301020222
54100003241232
6245430513122
734261102526
oct7507611052
92573502055
101025446442
114869240a9
122475057a2
131345a9657
149a292d86
156005aeb2
hex3d1f122a

1025446442 has 16 divisors (see below), whose sum is σ = 1556079432. Its totient is φ = 506787840.

The previous prime is 1025446441. The next prime is 1025446463. The reversal of 1025446442 is 2446445201.

1025446442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 770118001 + 255328441 = 27751^2 + 15979^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1025446399 and 1025446408.

It is not an unprimeable number, because it can be changed into a prime (1025446441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52142 + ... + 69062.

Almost surely, 21025446442 is an apocalyptic number.

1025446442 is a deficient number, since it is larger than the sum of its proper divisors (530632990).

1025446442 is a wasteful number, since it uses less digits than its factorization.

1025446442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17273.

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 1025446442 is about 32022.5926807934. The cubic root of 1025446442 is about 1008.4112006771.

The spelling of 1025446442 in words is "one billion, twenty-five million, four hundred forty-six thousand, four hundred forty-two".

Divisors: 1 2 157 193 314 386 16921 30301 33842 60602 2656597 3265753 5313194 6531506 512723221 1025446442