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142930875844 = 2219299492
BaseRepresentation
bin1000010100011101011…
…0000001010111000100
3111122221002122210120101
42011013112001113010
54320210301011334
6145354520413444
713216650253561
oct2050726012704
9448832583511
10142930875844
1155686831589
122384b317284
131062ab53563
146cbc99d868
153ab81ae214
hex21475815c4

142930875844 has 27 divisors (see below), whose sum is σ = 264013133517. Its totient is φ = 67697293968.

The previous prime is 142930875821. The next prime is 142930875859. The reversal of 142930875844 is 448578039241.

The square root of 142930875844 is 378062.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 56424301444 + 86506574400 = 237538^2 + 294120^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 14361382 + ... + 14371330.

Almost surely, 2142930875844 is an apocalyptic number.

142930875844 is the 378062-nd square number.

It is an amenable number.

142930875844 is a deficient number, since it is larger than the sum of its proper divisors (121082257673).

142930875844 is an frugal number, since it uses more digits than its factorization.

142930875844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19940 (or 9970 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 55.

The spelling of 142930875844 in words is "one hundred forty-two billion, nine hundred thirty million, eight hundred seventy-five thousand, eight hundred forty-four".

Divisors: 1 2 4 19 38 76 361 722 1444 9949 19898 39796 189031 378062 756124 3591589 7183178 14366356 98982601 197965202 395930404 1880669419 3761338838 7522677676 35732718961 71465437922 142930875844