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142321035520561 = 316499449672939
BaseRepresentation
bin100000010111000010110010…
…110001000010101000110001
3200122220202110200001120201111
4200113002302301002220301
5122123241440043124221
61222405214153233321
741656232635505002
oct4027026261025061
9618822420046644
10142321035520561
1141391015282267
1213b6692aa02841
136154a7bb74151
14272053691b1a9
15116c16b78ebe1
hex8170b2c42a31

142321035520561 has 4 divisors (see below), whose sum is σ = 142321485510000. Its totient is φ = 142320585531124.

The previous prime is 142321035520507. The next prime is 142321035520571. The reversal of 142321035520561 is 165025530123241.

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 a de Polignac number, because none of the positive numbers 2k-142321035520561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142321035520571) 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, 224519971 + ... + 225152968.

It is an arithmetic number, because the mean of its divisors is an integer number (35580371377500).

Almost surely, 2142321035520561 is an apocalyptic number.

It is an amenable number.

142321035520561 is a deficient number, since it is larger than the sum of its proper divisors (449989439).

142321035520561 is an equidigital number, since it uses as much as digits as its factorization.

142321035520561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449989438.

The product of its (nonzero) digits is 216000, while the sum is 40.

The spelling of 142321035520561 in words is "one hundred forty-two trillion, three hundred twenty-one billion, thirty-five million, five hundred twenty thousand, five hundred sixty-one".

Divisors: 1 316499 449672939 142321035520561