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142130574 = 23217464479
BaseRepresentation
bin10000111100010…
…11110110001110
3100220102222111100
420132023312032
5242341134244
622034203530
73344042565
oct1036136616
9326388440
10142130574
1173257893
123b7235a6
13235a5041
1414c3abdc
15c727b69
hex878bd8e

142130574 has 24 divisors (see below), whose sum is σ = 326064960. Its totient is φ = 44589888.

The previous prime is 142130563. The next prime is 142130581. The reversal of 142130574 is 475031241.

142130574 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1421305742 = 40402200131138952, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231934 + ... + 232545.

It is an arithmetic number, because the mean of its divisors is an integer number (13586040).

Almost surely, 2142130574 is an apocalyptic number.

142130574 is an abundant number, since it is smaller than the sum of its proper divisors (183934386).

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

142130574 is a wasteful number, since it uses less digits than its factorization.

142130574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464504 (or 464501 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 142130574 is about 11921.8527922467. The cubic root of 142130574 is about 521.8702059822.

The spelling of 142130574 in words is "one hundred forty-two million, one hundred thirty thousand, five hundred seventy-four".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 464479 928958 1393437 2786874 4180311 7896143 8360622 15792286 23688429 47376858 71065287 142130574