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142855494 = 2323809249
BaseRepresentation
bin10001000001111…
…00110101000110
3100221210210220020
420200330311012
5243032333434
622101520010
73353152215
oct1040746506
9327723806
10142855494
11737024a1
123ba13006
1323799ca2
1414d8907c
15c81c849
hex883cd46

142855494 has 8 divisors (see below), whose sum is σ = 285711000. Its totient is φ = 47618496.

The previous prime is 142855487. The next prime is 142855499. The reversal of 142855494 is 494558241.

It is a sphenic number, since it is the product of 3 distinct primes.

142855494 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142855499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11904619 + ... + 11904630.

It is an arithmetic number, because the mean of its divisors is an integer number (35713875).

Almost surely, 2142855494 is an apocalyptic number.

142855494 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

142855494 is a wasteful number, since it uses less digits than its factorization.

142855494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23809254.

The product of its digits is 230400, while the sum is 42.

The square root of 142855494 is about 11952.2171165019. The cubic root of 142855494 is about 522.7559473429.

The spelling of 142855494 in words is "one hundred forty-two million, eight hundred fifty-five thousand, four hundred ninety-four".

Divisors: 1 2 3 6 23809249 47618498 71427747 142855494