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145312124 = 221711318911
BaseRepresentation
bin10001010100101…
…00100101111100
3101010102121202112
420222110211330
5244144441444
622230313152
73413063336
oct1052244574
9333377675
10145312124
1175030171
12407b87b8
132414a209
1415428456
15cb5569e
hex8a9497c

145312124 has 24 divisors (see below), whose sum is σ = 271651968. Its totient is φ = 67773440.

The previous prime is 145312067. The next prime is 145312157. The reversal of 145312124 is 421213541.

It is a super-2 number, since 2×1453121242 = 42231226762782752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145312124.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772 + ... + 17139.

It is an arithmetic number, because the mean of its divisors is an integer number (11318832).

Almost surely, 2145312124 is an apocalyptic number.

It is an amenable number.

145312124 is a deficient number, since it is larger than the sum of its proper divisors (126339844).

145312124 is a wasteful number, since it uses less digits than its factorization.

145312124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19045 (or 19043 counting only the distinct ones).

The product of its digits is 960, while the sum is 23.

The square root of 145312124 is about 12054.5478554776. The cubic root of 145312124 is about 525.7354759130.

Adding to 145312124 its reverse (421213541), we get a palindrome (566525665).

The spelling of 145312124 in words is "one hundred forty-five million, three hundred twelve thousand, one hundred twenty-four".

Divisors: 1 2 4 17 34 68 113 226 452 1921 3842 7684 18911 37822 75644 321487 642974 1285948 2136943 4273886 8547772 36328031 72656062 145312124