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420146212505 = 597786007413
BaseRepresentation
bin1100001110100101010…
…10100110111010011001
31111011110201020000002112
412013102222212322121
523340424412300010
6521002411242105
742232420611305
oct6072252467231
91434421200075
10420146212505
11152201646aa8
1269516149335
13308093b9c46
1416499a68d05
15ade03e6a05
hex61d2aa6e99

420146212505 has 8 divisors (see below), whose sum is σ = 504691505352. Its totient is φ = 335772936448.

The previous prime is 420146212487. The next prime is 420146212511. The reversal of 420146212505 is 505212641024.

It can be written as a sum of positive squares in 4 ways, for example, as 109442534041 + 310703678464 = 330821^2 + 557408^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-420146212505 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42998822 + ... + 43008591.

It is an arithmetic number, because the mean of its divisors is an integer number (63086438169).

Almost surely, 2420146212505 is an apocalyptic number.

It is an amenable number.

420146212505 is a deficient number, since it is larger than the sum of its proper divisors (84545292847).

420146212505 is an equidigital number, since it uses as much as digits as its factorization.

420146212505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86008395.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 420146212505 its reverse (505212641024), we get a palindrome (925358853529).

The spelling of 420146212505 in words is "four hundred twenty billion, one hundred forty-six million, two hundred twelve thousand, five hundred five".

Divisors: 1 5 977 4885 86007413 430037065 84029242501 420146212505