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141830237 = 1143712401
BaseRepresentation
bin10000111010000…
…10100001011101
3100212212201111202
420131002201131
5242302031422
622023525245
73341352143
oct1035024135
9325781452
10141830237
117307217a
123b5b9825
13234cb423
1414b9d593
15c6b8b92
hex874285d

141830237 has 4 divisors (see below), whose sum is σ = 141854076. Its totient is φ = 141806400.

The previous prime is 141830233. The next prime is 141830251. The reversal of 141830237 is 732038141.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 47623801 + 94206436 = 6901^2 + 9706^2 .

It is a cyclic number.

It is not a de Polignac number, because 141830237 - 22 = 141830233 is a prime.

It is a super-2 number, since 2×1418302372 = 40231632254952338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (141830233) 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, 5237 + ... + 17637.

It is an arithmetic number, because the mean of its divisors is an integer number (35463519).

Almost surely, 2141830237 is an apocalyptic number.

It is an amenable number.

141830237 is a deficient number, since it is larger than the sum of its proper divisors (23839).

141830237 is a wasteful number, since it uses less digits than its factorization.

141830237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23838.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 141830237 is about 11909.2500603522. The cubic root of 141830237 is about 521.5023577001.

Adding to 141830237 its reverse (732038141), we get a palindrome (873868378).

The spelling of 141830237 in words is "one hundred forty-one million, eight hundred thirty thousand, two hundred thirty-seven".

Divisors: 1 11437 12401 141830237