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142421112 = 23331934703
BaseRepresentation
bin10000111110100…
…10110001111000
3100220222202001000
420133102301320
5242424433422
622044325000
73346362621
oct1037226170
9326882030
10142421112
11734360a9
123b843760
1323677362
1414cb4a48
15c783cac
hex87d2c78

142421112 has 64 divisors (see below), whose sum is σ = 416448000. Its totient is φ = 44973792.

The previous prime is 142421051. The next prime is 142421113. The reversal of 142421112 is 211124241.

142421112 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421113) 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, 13248 + ... + 21455.

It is an arithmetic number, because the mean of its divisors is an integer number (6507000).

Almost surely, 2142421112 is an apocalyptic number.

142421112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142421112 is an abundant number, since it is smaller than the sum of its proper divisors (274026888).

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

142421112 is a wasteful number, since it uses less digits than its factorization.

142421112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34737 (or 34727 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142421112 is about 11934.0316741661. The cubic root of 142421112 is about 522.2255598063.

Adding to 142421112 its reverse (211124241), we get a palindrome (353545353).

The spelling of 142421112 in words is "one hundred forty-two million, four hundred twenty-one thousand, one hundred twelve".