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142210654 = 21633791151
BaseRepresentation
bin10000111100111…
…11011001011110
3100220121001100021
420132133121132
5242401220104
622040022354
73344525215
oct1036373136
9326531307
10142210654
1173301a73
123b7619ba
1323602621
1414c5c07c
15c741754
hex879f65e

142210654 has 16 divisors (see below), whose sum is σ = 215377920. Its totient is φ = 70421400.

The previous prime is 142210637. The next prime is 142210669. The reversal of 142210654 is 456012241.

It is a happy number.

It is a super-2 number, since 2×1422106542 = 40447740222215432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 122979 + ... + 124129.

It is an arithmetic number, because the mean of its divisors is an integer number (13461120).

Almost surely, 2142210654 is an apocalyptic number.

142210654 is a deficient number, since it is larger than the sum of its proper divisors (73167266).

142210654 is a wasteful number, since it uses less digits than its factorization.

142210654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 142210654 is about 11925.2108576746. The cubic root of 142210654 is about 521.9681992537.

Adding to 142210654 its reverse (456012241), we get a palindrome (598222895).

The spelling of 142210654 in words is "one hundred forty-two million, two hundred ten thousand, six hundred fifty-four".

Divisors: 1 2 163 326 379 758 1151 2302 61777 123554 187613 375226 436229 872458 71105327 142210654