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1442742701 = 6132353577
BaseRepresentation
bin101010111111110…
…1000000110101101
310201112202220220212
41111333220012231
510423320231301
6355054552205
750516052641
oct12577500655
93645686825
101442742701
11680432a44
12343208665
1319cb9580a
14d987ac21
15869d94bb
hex55fe81ad

1442742701 has 4 divisors (see below), whose sum is σ = 1445096892. Its totient is φ = 1440388512.

The previous prime is 1442742683. The next prime is 1442742703. The reversal of 1442742701 is 1072472441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1072472441 = 5918177499.

It can be written as a sum of positive squares in 2 ways, for example, as 403969801 + 1038772900 = 20099^2 + 32230^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442742701 - 214 = 1442726317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442742703) 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, 1176176 + ... + 1177401.

It is an arithmetic number, because the mean of its divisors is an integer number (361274223).

Almost surely, 21442742701 is an apocalyptic number.

It is an amenable number.

1442742701 is a deficient number, since it is larger than the sum of its proper divisors (2354191).

1442742701 is an equidigital number, since it uses as much as digits as its factorization.

1442742701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2354190.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 1442742701 is about 37983.4529894269. The cubic root of 1442742701 is about 1129.9597189808.

The spelling of 1442742701 in words is "one billion, four hundred forty-two million, seven hundred forty-two thousand, seven hundred one".

Divisors: 1 613 2353577 1442742701