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136243042 = 2135240117
BaseRepresentation
bin10000001111011…
…10011101100010
3100111100212022121
420013232131202
5234334234132
621304054454
73243022015
oct1007563542
9314325277
10136243042
116a9a6461
123976442a
13222c32b0
141414737c
15be63497
hex81ee762

136243042 has 8 divisors (see below), whose sum is σ = 220084956. Its totient is φ = 62881392.

The previous prime is 136243021. The next prime is 136243043. The reversal of 136243042 is 240342631.

136243042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 131354521 + 4888521 = 11461^2 + 2211^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 136242998 and 136243016.

It is not an unprimeable number, because it can be changed into a prime (136243043) 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, 2620033 + ... + 2620084.

Almost surely, 2136243042 is an apocalyptic number.

136243042 is a deficient number, since it is larger than the sum of its proper divisors (83841914).

136243042 is a wasteful number, since it uses less digits than its factorization.

136243042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5240132.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 136243042 is about 11672.3194781500. The cubic root of 136243042 is about 514.5624737809.

Adding to 136243042 its reverse (240342631), we get a palindrome (376585673).

The spelling of 136243042 in words is "one hundred thirty-six million, two hundred forty-three thousand, forty-two".