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142315247906 = 21347391929717
BaseRepresentation
bin1000010010001010100…
…1100101100100100010
3111121100012020122210122
42010202221211210202
54312430200413111
6145213445400242
713165463435126
oct2044251454442
9447305218718
10142315247906
11553a027a167
12236b9109082
1310560445580
146c60d09586
153a7e105cdb
hex2122a65922

142315247906 has 32 divisors (see below), whose sum is σ = 234853032960. Its totient is φ = 64267862976.

The previous prime is 142315247869. The next prime is 142315247909. The reversal of 142315247906 is 609742513241.

It is not an unprimeable number, because it can be changed into a prime (142315247909) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4774160 + ... + 4803876.

It is an arithmetic number, because the mean of its divisors is an integer number (7339157280).

Almost surely, 2142315247906 is an apocalyptic number.

142315247906 is a deficient number, since it is larger than the sum of its proper divisors (92537785054).

142315247906 is a wasteful number, since it uses less digits than its factorization.

142315247906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33698.

The product of its (nonzero) digits is 362880, while the sum is 44.

The spelling of 142315247906 in words is "one hundred forty-two billion, three hundred fifteen million, two hundred forty-seven thousand, nine hundred six".

Divisors: 1 2 13 26 47 94 611 1222 3919 7838 29717 50947 59434 101894 184193 368386 386321 772642 1396699 2394509 2793398 4789018 18157087 36314174 116460923 232921846 1513991999 3027983998 5473663381 10947326762 71157623953 142315247906