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142430154 = 2373433751
BaseRepresentation
bin10000111110101…
…00111111001010
3100221000012102220
420133110333022
5242430231104
622044434510
73346431156
oct1037247712
9327005386
10142430154
1173441979
123b848a36
132367b4c9
1414cb8066
15c7867d9
hex87d4fca

142430154 has 32 divisors (see below), whose sum is σ = 289814784. Its totient is φ = 46656000.

The previous prime is 142430153. The next prime is 142430173. The reversal of 142430154 is 451034241.

It is a super-3 number, since 3×1424301543 (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (142430153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189279 + ... + 190029.

It is an arithmetic number, because the mean of its divisors is an integer number (9056712).

Almost surely, 2142430154 is an apocalyptic number.

142430154 is an abundant number, since it is smaller than the sum of its proper divisors (147384630).

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

142430154 is a wasteful number, since it uses less digits than its factorization.

142430154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 142430154 is about 11934.4105007327. The cubic root of 142430154 is about 522.2366112193.

Adding to 142430154 its reverse (451034241), we get a palindrome (593464395).

The spelling of 142430154 in words is "one hundred forty-two million, four hundred thirty thousand, one hundred fifty-four".

Divisors: 1 2 3 6 73 146 219 433 438 751 866 1299 1502 2253 2598 4506 31609 54823 63218 94827 109646 164469 189654 325183 328938 650366 975549 1951098 23738359 47476718 71215077 142430154