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122015013142 = 2115546136961
BaseRepresentation
bin111000110100010101…
…0010101100100010110
3102122221102202212212211
41301220222111210112
53444341320410032
6132015233104034
711546434333201
oct1615052254426
9378842685784
10122015013142
1147823326340
121b7926b801a
13b6767ba039
145c96bcc938
153291d31747
hex1c68a95916

122015013142 has 8 divisors (see below), whose sum is σ = 199660930632. Its totient is φ = 55461369600.

The previous prime is 122015013139. The next prime is 122015013149. The reversal of 122015013142 is 241310510221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 5546136961 = 122015013142 / (1 + 2 + 2 + 0 + 1 + 5 + 0 + 1 + 3 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122015013149) 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, 2773068459 + ... + 2773068502.

It is an arithmetic number, because the mean of its divisors is an integer number (24957616329).

Almost surely, 2122015013142 is an apocalyptic number.

122015013142 is a deficient number, since it is larger than the sum of its proper divisors (77645917490).

122015013142 is a wasteful number, since it uses less digits than its factorization.

122015013142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546136974.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 122015013142 its reverse (241310510221), we get a palindrome (363325523363).

The spelling of 122015013142 in words is "one hundred twenty-two billion, fifteen million, thirteen thousand, one hundred forty-two".

Divisors: 1 2 11 22 5546136961 11092273922 61007506571 122015013142