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145747542 = 2324291257
BaseRepresentation
bin10001010111111…
…10111001010110
3101011020202001010
420223332321112
5244302410132
622243513050
73416555643
oct1053767126
9334222033
10145747542
11752a8316
1240988786
1324270465
14154dcdca
15cbde6cc
hex8afee56

145747542 has 8 divisors (see below), whose sum is σ = 291495096. Its totient is φ = 48582512.

The previous prime is 145747531. The next prime is 145747543. The reversal of 145747542 is 245747541.

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

145747542 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 145747542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145747543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12145623 + ... + 12145634.

It is an arithmetic number, because the mean of its divisors is an integer number (36436887).

Almost surely, 2145747542 is an apocalyptic number.

145747542 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.

145747542 is a wasteful number, since it uses less digits than its factorization.

145747542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24291262.

The product of its digits is 156800, while the sum is 39.

The square root of 145747542 is about 12072.5946672619. The cubic root of 145747542 is about 526.2600626222.

Subtracting 145747542 from its reverse (245747541), we obtain a palindrome (99999999).

The spelling of 145747542 in words is "one hundred forty-five million, seven hundred forty-seven thousand, five hundred forty-two".

Divisors: 1 2 3 6 24291257 48582514 72873771 145747542