Search a number
-
+
142031900660 = 22513546276541
BaseRepresentation
bin1000010001000111000…
…0101100111111110100
3111120121110002010110012
42010101300230333310
54311340131310120
6145125404315352
713155453143636
oct2042160547764
9446543063405
10142031900660
115526533a191
122363a242b58
1310516828490
146c3542ca56
153a642d61c5
hex2111c2cff4

142031900660 has 24 divisors (see below), whose sum is σ = 321210606696. Its totient is φ = 52442547840.

The previous prime is 142031900657. The next prime is 142031900707. The reversal of 142031900660 is 66009130241.

It can be written as a sum of positive squares in 4 ways, for example, as 33557843344 + 108474057316 = 183188^2 + 329354^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273138011 + ... + 273138530.

It is an arithmetic number, because the mean of its divisors is an integer number (13383775279).

Almost surely, 2142031900660 is an apocalyptic number.

142031900660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142031900660 is an abundant number, since it is smaller than the sum of its proper divisors (179178706036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142031900660 is a wasteful number, since it uses less digits than its factorization.

142031900660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546276563 (or 546276561 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The spelling of 142031900660 in words is "one hundred forty-two billion, thirty-one million, nine hundred thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 546276541 1092553082 2185106164 2731382705 5462765410 7101595033 10925530820 14203190066 28406380132 35507975165 71015950330 142031900660