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1030255121 = 7373977819
BaseRepresentation
bin111101011010000…
…111001000010001
32122210121101100002
4331122013020101
54102221130441
6250121535345
734350011150
oct7532071021
92583541302
101030255121
11489608a15
12249044555
131355a131c
149ab85597
15606aab9b
hex3d687211

1030255121 has 8 divisors (see below), whose sum is σ = 1209257280. Its totient is φ = 859208688.

The previous prime is 1030255111. The next prime is 1030255129. The reversal of 1030255121 is 1215520301.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1030255121 - 210 = 1030254097 is a prime.

It is a super-2 number, since 2×10302551212 = 2122851228693449282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1030255093 and 1030255102.

It is not an unprimeable number, because it can be changed into a prime (1030255129) 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, 1988651 + ... + 1989168.

It is an arithmetic number, because the mean of its divisors is an integer number (151157160).

Almost surely, 21030255121 is an apocalyptic number.

It is an amenable number.

1030255121 is a deficient number, since it is larger than the sum of its proper divisors (179002159).

1030255121 is an equidigital number, since it uses as much as digits as its factorization.

1030255121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3977863.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 1030255121 is about 32097.5874638578. The cubic root of 1030255121 is about 1009.9850081100.

Adding to 1030255121 its reverse (1215520301), we get a palindrome (2245775422).

The spelling of 1030255121 in words is "one billion, thirty million, two hundred fifty-five thousand, one hundred twenty-one".

Divisors: 1 7 37 259 3977819 27844733 147179303 1030255121