Search a number
-
+
142011115231 = 266835322157
BaseRepresentation
bin1000010001000010000…
…1011010011011011111
3111120112222222010012111
42010100201122123133
54311314321141411
6145123343014451
713155111364006
oct2042041323337
9446488863174
10142011115231
1155254632847
122363329a427
131051242b6cb
146c3277bc3d
153a6257c721
hex211085a6df

142011115231 has 4 divisors (see below), whose sum is σ = 142016464072. Its totient is φ = 142005766392.

The previous prime is 142011115201. The next prime is 142011115247. The reversal of 142011115231 is 132511110241.

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 142011115231 - 215 = 142011082463 is a prime.

It is a super-2 number, since 2×1420111152312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142011115201) 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, 2634396 + ... + 2687761.

It is an arithmetic number, because the mean of its divisors is an integer number (35504116018).

Almost surely, 2142011115231 is an apocalyptic number.

142011115231 is a deficient number, since it is larger than the sum of its proper divisors (5348841).

142011115231 is an equidigital number, since it uses as much as digits as its factorization.

142011115231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5348840.

The product of its (nonzero) digits is 240, while the sum is 22.

Adding to 142011115231 its reverse (132511110241), we get a palindrome (274522225472).

The spelling of 142011115231 in words is "one hundred forty-two billion, eleven million, one hundred fifteen thousand, two hundred thirty-one".

Divisors: 1 26683 5322157 142011115231