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42156051727 = 232691811683
BaseRepresentation
bin100111010000101100…
…100100110100001111
311000210221001022110011
4213100230210310033
51142313422123402
631211034254051
73021444345616
oct472054446417
9130727038404
1042156051727
1116972aa0679
128205b87327
133c8a96720a
14207ca8887d
15116ae21ed7
hex9d0b24d0f

42156051727 has 4 divisors (see below), whose sum is σ = 42157886680. Its totient is φ = 42154216776.

The previous prime is 42156051673. The next prime is 42156051731. The reversal of 42156051727 is 72715065124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42156051727 - 223 = 42147663119 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42156051727.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42156051527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 882573 + ... + 929110.

It is an arithmetic number, because the mean of its divisors is an integer number (10539471670).

Almost surely, 242156051727 is an apocalyptic number.

42156051727 is a deficient number, since it is larger than the sum of its proper divisors (1834953).

42156051727 is a wasteful number, since it uses less digits than its factorization.

42156051727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1834952.

The product of its (nonzero) digits is 117600, while the sum is 40.

The spelling of 42156051727 in words is "forty-two billion, one hundred fifty-six million, fifty-one thousand, seven hundred twenty-seven".

Divisors: 1 23269 1811683 42156051727