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420130653 = 3140043551
BaseRepresentation
bin11001000010101…
…010111101011101
31002021112211220120
4121002222331131
51330023140103
6105404505153
713261023465
oct3102527535
91067484816
10420130653
111a6175418
12b884b1b9
136906c327
143db24ba5
1526d3d253
hex190aaf5d

420130653 has 4 divisors (see below), whose sum is σ = 560174208. Its totient is φ = 280087100.

The previous prime is 420130637. The next prime is 420130661. The reversal of 420130653 is 356031024.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 420130653 - 24 = 420130637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420130663) 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, 70021773 + ... + 70021778.

It is an arithmetic number, because the mean of its divisors is an integer number (140043552).

Almost surely, 2420130653 is an apocalyptic number.

It is an amenable number.

420130653 is a deficient number, since it is larger than the sum of its proper divisors (140043555).

420130653 is a wasteful number, since it uses less digits than its factorization.

420130653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140043554.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 420130653 is about 20497.0888908645. The cubic root of 420130653 is about 748.9648849285.

Adding to 420130653 its reverse (356031024), we get a palindrome (776161677).

The spelling of 420130653 in words is "four hundred twenty million, one hundred thirty thousand, six hundred fifty-three".

Divisors: 1 3 140043551 420130653